《What Did the Ancient Chinese Physicians Actually See? 》Volume I BK22

More than two thousand years ago, without microscopes, CT scans or modern laboratories, what did Chinese physicians actually see? Beginning with ancient medical records, Volume I traces the ideas of meridians, acupuncture points and qi, placing traditional observations alongside modern scientific inquiry without forcing one system into the language of the other.

BK22 What Did the Ancient Chinese Physicians Actually See? Volume I

Fang Tianliang

Part One: When Doctors Had Only Their Own Eyes

Chapter One: The Day Bian Que Turned and Walked Away

—How did people without instruments know that a disease was changing?

China has one of the world’s longest-running, most extensively preserved traditions of written history. This is not because the ancients never exaggerated, but because they developed a habit very early on: to record, as far as possible, the names of people they saw, the events that happened, and the words that were spoken, along with names, dates, causes, and outcomes. When Sima Qian wrote the Records of the Grand Historian, more than a century after the founding of the Han dynasty, he was still able to draw on court archives, records of the enfeoffed states, popular genealogies, and earlier documents to turn figures from the Spring and Autumn and Warring States periods into biographical subjects with names, dialogue, and endings. Medicine was written into this record as well. How Bian Que examined patients by observation, how Cang Gong answered the emperor’s questions, which of twenty-five people lived and which died — none of this remained mere oral legend. It entered the official histories.

Official histories embellish; fables creep into biographies; the same event is given different names in different books. That a great deal was recorded does not mean every sentence can be checked line by line the way a modern medical record can. And yet a banquet held more than two thousand years ago, a ruler who refused to be examined, a reply in which a physician admitted he could misjudge — these can still be read, clause by clause, today. For a book asking “what did the ancients actually see,” that is enough of an entry point.

This chapter will do one thing first: lay out, as completely and accurately as possible, what the ancients left behind. What can be verified will be verified later; what cannot be verified by ordinary means today will be marked as unverifiable. Nothing will be deleted on the ancients’ behalf, and nothing will be smoothed over on their behalf either.

So this first chapter will not answer “is Chinese medicine scientific,” will not answer “could Bian Que foretell death,” and certainly will not answer “are the meridians real.” It asks only:

Before modern instruments existed, how did early Chinese physicians judge that a disease was changing?

1. The Most Famous Doctor Is Often Not the Best One

Marquis Wen of Wei asked Bian Que: your family has three brothers who all practice medicine — which of you is actually the best?

Bian Que said: my eldest brother is the best, my second brother comes next, and I, Bian Que, am the least of the three.

The Marquis was surprised. Everyone under heaven called Bian Que a miracle worker — how could he rank himself third?

Bian Que said: my eldest brother treats illness before it has taken visible form, so his reputation never leaves the household. My second brother treats it when it has only just appeared, faint as a hair, so his reputation goes no further than the village. By the time a case reaches me, the blood and vessels must already be pierced, powerful drugs administered, sometimes even the flesh itself treated — so everyone can see it, and my reputation has reached the feudal lords.

This exchange comes from the “Shixian” chapter of the Heguanzi. It may not be something Bian Que actually said; it reads more like later writers borrowing his name to lay out a hierarchy of medical skill. The highest grade of physician treats illness before it has taken form; the second grade catches it the moment it can just be detected; the third grade — also the easiest to become famous — treats it once it has already gone deep, when the rescue is visible to everyone.

Fame follows drama. Medicine ought to follow timing.

This distinction still stings today. What gets seen in a hospital is, more often than not, surgery, emergency resuscitation, machines, and critical illness. Prevention almost never makes a scene; early-stage adjustment is rarely turned into legend. The story of the three brothers sets this upside-down picture right again: villagers who never fall seriously ill may not remember the eldest brother’s name at all; only once blood must be let, drugs administered, and flesh cut will the onlookers say — now that’s a doctor.

And so a very concrete question arises. The eldest brother saw illness “not yet formed”; the second brother saw it “faint as a hair”; the third brother saw it only once it “already required bloodletting and drugs.” None of them had a thermometer, a blood test, or an imaging scan. How could they tell which stage they were looking at?

To answer this, we have to go back to that man in the history books.

2. What Did the Bian Que of the Records of the Grand Historian Actually “See”?

Bian Que’s place in the history of Chinese medicine is not well suited to being written as the sole protagonist of some “golden age.” It fits better as the entry point of a long line. The safer way to put it is: some of the most original basic frameworks of Chinese medicine gradually took shape from the pre-Qin period through the Han dynasty, and Bian Que stands near the front of that line.

The “Biographies of Bian Que and Cang Gong” in the Records of the Grand Historian records his surname as Qin, his given name Yueren, a native of Mo in Bohai commandery. He could adapt himself to local custom: in Zhao he was a physician of “below the belt” (gynecological) conditions, in Zhou an ear-eye-and-numbness physician, in Qin a pediatrician. In other words, what the history wants to emphasize is not that he knew only one arcane skill, but that he knew how to look at different kinds of people. He was also said to be “especially known for pulse diagnosis.” The pulse, at that time, was a way of translating internal change into an external signal as directly as possible. Press the fingers to the wrist, feel the speed, the strength, the rhythm. Without a blood-pressure cuff, this was already the closest one could come to touching the “inside.”

The name “Bian Que” itself may also stand for something larger than one man. Some later scholars believe it referred both to Qin Yueren and, possibly, to a title once used for a whole category of physicians skilled in diagnosis by observation. This chapter need not settle that debate. It is enough to remember: what we are facing is a medical figure as portrayed in the histories, not a personal file that has been verified in the modern sense.

The Records contains another passage about Bian Que that gives today’s reader more pause.

Sima Qian writes: in his youth Bian Que worked at an inn, where he met a man named Chang Sangjun. Chang Sangjun came and went for over ten years, and Bian Que always treated him with great respect. Eventually Chang Sangjun told him privately: I possess secret prescriptions; I am old now, and I want to pass them to you — do not reveal them. Bian Que agreed. Chang Sangjun gave him the medicine and told him to take it with “water from above the pool” (shangchi zhi shui). The original text does not pin down exactly what this water was; later readers generally take it to mean water that has not yet touched the ground. What it actually refers to, the history gives no way to check. Chang Sangjun then handed over all his books of secret prescriptions, and suddenly vanished. Sima Qian writes: he was, it seems, one of those legendary figures called “spirit men.”

Thirty days later, Bian Que was able to “see people on the other side of a wall.” In plain language: he could see through a wall to the person standing on the far side. Using this ability to examine patients, he could then “see the knots and blockages of the five viscera in full.” In plain language: the trouble points inside a person’s internal organs seemed to become visible to him. From then on, it is said, he often used this kind of “seeing” to cross-check the pulse.

This is not the Bian Que of later fiction. It is a sentence in the actual body of the Records of the Grand Historian.

This chapter will not explain it away here.

It will not say this must be true; nor will it, simply because it cannot be replicated by ordinary means today, delete it on Sima Qian’s behalf. Throughout this book, material is sorted into three layers. Layer one: what the histories record. Layer two: what modern medicine can verify. Layer three: what cannot currently be verified by ordinary modern means. Seeing through a wall, seeing the knots of the five viscera in full — these belong to layer three. For now, they are kept as historical material.

If this kind of record appeared only once, it might be dismissed as an isolated case. But accounts of famous physicians who could “know at a glance,” “know before diagnosis,” or “see through objects to the illness within” are not unique to Bian Que in early Chinese medical literature. Many biographies of famous physicians also include stories of transmission from mysterious figures, secret prescriptions, cultivation practices, or abilities beyond the ordinary. Why do early Chinese medical texts and biographies of famous doctors so often contain records of self-cultivation, guided exercises, transmission by extraordinary figures, and perception beyond the normal senses? That is not this chapter’s question. But it will not disappear from this book either.

This chapter still asks only one thing: within these records, how did physicians judge that an illness was changing?

3. The Day the Ruler Said “I Am Not Ill”

A physician walked into the palace and said to the ruler:

“You have an illness in the surface layers of the skin. If it is not treated, I fear it will go deeper.”

The ruler was displeased. I have no illness. Physicians always like to call the healthy sick, to show off their own skill.

Ten days later, the physician came again.

“Your illness is now in the flesh. If it is not treated, it will grow worse.”

The ruler was even more displeased, and paid him no attention.

Ten days after that.

“Your illness is now in the stomach and intestines.”

The ruler would not even look at him.

Ten more days passed. The physician looked at him from a distance, then turned and left.

The ruler sent someone to ask: why did he say nothing this time?

The physician said: when the illness was in the surface layers, hot compresses and fomentation could still treat it; once in the flesh, needles and stone lancets could still treat it; once in the stomach and intestines, decoctions could still reach it in time. But now that it has entered the marrow, that is no longer something I can treat. It belongs to the Arbiter of Fate; there is nothing to be done. That is why I no longer asked to treat him.

Five days later, the ruler’s body began to ache. He sent people to find the physician again, but the man had already left. Not long after, the ruler died.

In the “Yu Lao” chapter of the Han Feizi, this ruler is named Marquis Huan of Cai; in the “Biographies of Bian Que and Cang Gong” in the Records of the Grand Historian, a similar structure is written as Marquis Huan of Qi. The two texts need not be forced into a single, real consultation. A book may be written with dramatic force, but it should not, for the sake of drama, blend different historical sources into a single event.

Once the moisture of pure storytelling is wrung out, this scene still leaves behind an extremely hard medical idea:

Illness is not a name that suddenly appears. It is a process that gradually changes.

The first time, the illness was still on the surface.

The second time, one layer deeper.

The third time, deeper still.

The last time, the physician judged that he himself could do nothing more.

There was no CT scan, no modern staging label like “Stage III of such-and-such cancer.” But the narrative already contains staging: the surface layers, the flesh, the stomach and intestines, the marrow. Each layer deeper, each layer harder to treat. What the ruler denied was not some specific test result, but the change that was already taking place in his own body.

“The surface layers, the flesh, the stomach and intestines, the marrow” was the language of depth used at the time — it is not a pathology slide. It should not be written as: Bian Que saw some kind of modern tumor or bone-marrow disease. Nor should it be written as: this story has already proven some modern structure. The most dramatic stroke in the story is the final “looked from a distance, and turned away.” He did not even come closer. This is powerful as literature, but medically it suggests only one possibility: some judgments come from a sudden overall shift in a person’s whole presentation — someone moving from “can still argue that he is not sick” to “already visibly beyond saving.” Such a judgment can come from experience, or it can be written up after the fact as more miraculous than it was. The two must be kept separate.

What holds up, genuinely, is time.

Ten days. Then ten more. Then ten more again. The physician placed the same person back within time and watched him. The illness was progressing. The ruler saw only his own feeling in the present moment. This is the same weapon as in the story of the three brothers. The eldest brother intercepted the illness before it took form; the second brother intercepted it at its first stirring; Marquis Huan met a physician who had already been refused at the first two stages, and could not even manage the third.

That later Chinese medicine placed such emphasis on “illness not yet manifest,” “the trajectory of disease,” and “transmission and transformation” was not because the ancients enjoyed sounding alarmist, but because they had no way to photograph the lesion inside the body all at once — they could only compare before and after: is this person deeper into the illness than last time, or shallower?

Bian Que had no CT scanner. What did he actually see?

The honest answer available today is this: the histories record that he saw the illness changing layers. As for whether he relied on complexion, posture, and changes over time, or on that inner vision that could “see the knots of the five viscera in full,” the material itself does not settle the matter for us. What can be tested, we leave for testing. What cannot be tested, we mark as a blank space for now.

4. China’s Earliest Surviving Medical Case Reports: Cang Gong’s Diagnostic Records

If Bian Que still feels too much like legend, Chunyu Yi of the Western Han will pull the reader back to a record that can be read case by case.

Chunyu Yi was born around 205 BCE in Linzi, and served as the Grand Granary Chief of the state of Qi — hence the title “Cang Gong” (Granary Duke). He studied medicine under Gongcheng Yangqing. Yangqing, past seventy and without a son, passed on to him his old collection of pulse texts and pharmacological treatises, and had him first discard the “incorrect prescription books” he had studied before. During Emperor Wen’s reign, Chunyu Yi refused to treat only the powerful and privileged, and repeatedly claimed illness to avoid seeing certain patients, which brought him complaints and eventually a summons to Chang’an to face punishment. His youngest daughter Tiying petitioned the throne, offering to become a palace servant to redeem her father’s sentence. Emperor Wen pardoned him, and personally questioned him: how did you learn medicine? Whom have you treated? On what basis do you decide life and death?

To answer the emperor, Chunyu Yi listed twenty-five cases based on the diagnostic records he kept in his daily practice. Sima Qian included them in the “Biographies of Bian Que and Cang Gong” in the Records of the Grand Historian. This is among the earliest relatively complete sets of medical case records surviving in China. Of the twenty-five patients, roughly fifteen improved and ten died. They ranged from officials to servants, and included women and children. The conditions covered digestion, urinary problems, respiratory illness, injury, poisoning, dental problems, and gynecological and obstetric cases. Each case generally records the name, occupation, residence, symptoms, pulse, judgment, treatment, and outcome.

Emperor Wen asked: when you judge life and death, can you be entirely without error?

Chunyu Yi said:

“Time and again I have been wrong; I, your servant Yi, cannot be complete.”

More than two thousand years ago, a physician being questioned by the emperor about his medical skill did not answer “my pulse diagnosis is never wrong.” He said: sometimes I judge incorrectly.

This sentence comes closer to medicine than any title of “miracle doctor” ever could. It also reminds the reader: the cases that follow are judgments that were recorded — not proof that every step has already been verified by modern methods.

Song Jian at the Banquet

A banquet in the second century BCE.

Huang Zhangqing of Qi was hosting guests. Others were drinking and talking. Chunyu Yi, however, was watching one man. That man was Song Jian, younger brother of the Queen of Qi. Song Jian had not come to be examined.

Chunyu Yi suddenly said: you have already been ill for four or five days. Pain in the lower back, unable to bend or straighten, and difficulty urinating. You should treat this quickly, before it spreads into the five viscera. This is a kind of “kidney block” (shen bi).

Song Jian was startled, and admitted: it is exactly so. He later took the “soothing decoction” Chunyu Yi gave him, and recovered in eighteen days.

Song Jian had not come seeking a diagnosis, yet Chunyu Yi spoke first of lower-back pain, inability to bend, and difficulty urinating. The Records does not tell us exactly which signs led him to this judgment. We leave that gap for now.

What can be confirmed is only the outcome: the diagnosis was confirmed by the patient himself, the treatment recovered him in about eighteen days, and it was written into the diagnostic records. The name, the symptoms, the treatment, the number of days — all present. The basis for the judgment itself is not spelled out in the histories.

The Imperial Censor Cheng, Who Complained of a Headache

Cheng, an imperial censor of Qi, came in complaining of a headache. After taking his pulse, Chunyu Yi believed the real problem lay elsewhere. He did not say so in public, but privately told Cheng’s younger brother Chang: this illness is not something to discuss openly. It is an abscess forming between the stomach and intestines. In five days it will swell; in eight days he will vomit pus and die.

The man later died.

We cannot use this case to prove that “pulse diagnosis can precisely predict the date of death.” The specific number of days may have been rounded for narrative neatness, or may reflect the numerological habits of the time. But the method still stands: rather than stopping at the patient’s self-reported “headache,” Chunyu Yi placed the pulse and the whole-body condition together with the possible course of the disease. The complaint was local. The judgment concerned what the whole person was undergoing.

A Fever After Falling Into the Water

Xin, the Chief of the Central Bureau of the Palace Treasury of Qi, fell ill. Chunyu Yi examined his pulse and told him: this is the qi of a fever illness, but after the sweat brought on by heat the pulse has already weakened slightly — he will not die from it. He also said: this illness came from severe cold suffered while in flowing water, followed by heat after the cold had passed.

Xin said: exactly so. Last winter, sent by the King of Qi on a mission to Chu, he reached Yangzhou in Ju county, where a bridge had collapsed. He had not wanted to cross, but his horse bolted and he fell into the water, nearly drowning. Officials rushed to pull him out; his clothes were soaked through. After a while his body first turned cold, then grew hot as fire, and he has feared cold ever since.

Chunyu Yi used a decoction of the “fire-tempering” formula to drive out the heat. After the first dose, the sweating stopped; after the second, the heat receded; after the third, the illness was gone. He then had him take further medicine, and after twenty days his body had recovered as before.

The trigger, the sequence of events, the pulse-based judgment, the changes after each successive dose — all recorded in the histories. Falling into cold water in winter, soaked clothing, cold followed by heat, a lasting fear of cold ever after — these details do more than any abstract theory to show that Cang Gong was, first and foremost, listening to how a living person had arrived at where they now stood.

The Maid Shu, Who Said “I Am Not Ill”

The King of Qi had Chunyu Yi examine his maidservants. When it came to one named Shu, she said she was not ill. Chunyu Yi privately told the official in charge: the sheen of her hair and her pulse have not yet visibly declined, but the illness has already damaged her spleen and stomach. Do not let her overexert herself. By spring, I fear she will vomit blood and die.

The “I am not ill” of Marquis Huan’s story appears again here. The difference is that Cang Gong wrote it into a medical record, and treated the season itself as a condition of the illness’s progression. Once again, the patient’s own sense of self lagged behind the change the physician could see.

A Blocked Hernia With No Passage

Xun, the Chief Attendant of Qi, fell ill. Other physicians believed it was a case of “obstruction entering the interior” and wanted to use needles. After examination, Chunyu Yi said: this is a “surging hernia” (yong shan), which will block urination and defecation. Xun admitted: it has already been three days since I have been able to relieve myself. Chunyu Yi gave him the fire-tempering decoction. After the first dose he could relieve himself; after the second, he recovered.

“Surging hernia” and “fire-tempering decoction” are names of the time; the decoction was likely something used to clear heat and relieve blockage. We cannot translate it directly into any specific modern prescription.

The two cases share the same method. First, set aside the label already given by the patient or by other physicians. Then look at what change is most urgent right now. Then let time answer. One drink, then another — the results are recorded. Success is not written up as mysterious; failure, in other cases, is recorded just as plainly.

Cang Gong also left records of judging life and death: for some, the pulse suggested treatment was possible, and even though the illness had lasted long, he still said “this one can live”; for others, the pulse suggested the case was hopeless, and he stated the expected time of death outright. The twenty-five cases are not a showcase of miraculous skill, but a file mixing correct and incorrect judgments, cures and deaths. That is precisely what makes it closer to a “medical report” than the Bian Que legends are.

5. They Also Recorded That Illness Follows the Day

Early texts contain another observation tied to time, worth recording in this chapter — not to get ahead of ourselves into the idea of correspondence between heaven and man, but because it too answers the question: how did the ancients know an illness was changing?

The chapter “The Day Divided Into Four Seasons, and the Flow of Qi” in the Lingshu states: with most illnesses, the patient is clearer in the morning, calmer through the day, worse in the evening, and most severe at night. In the morning, a person’s qi begins to rise and the pathogenic qi weakens, hence the relative clarity; at midday the person’s qi is at its height and can overcome the pathogenic influence, hence the relative calm; toward evening the person’s qi begins to wane and the pathogenic qi begins to grow, hence the worsening; at midnight the person’s qi withdraws into the internal organs and the pathogenic qi alone occupies the body, hence the greatest severity.

In plain language: many illnesses are milder in the morning, fairly stable through the day, worse in the evening, and worst at night.

The Huangdi Neijing (Yellow Emperor’s Inner Classic) was not written by the Yellow Emperor himself. The safer account is that its various chapters were composed at different times, drawing mainly on medical experience accumulated from the Warring States period through the Qin and Han dynasties, with the whole compiled roughly in the mid-to-late Western Han. It had no single author. The Nanjing (Classic of Difficult Issues) is later still, likely compiled sometime between the Western and Eastern Han, focused on organizing pulse diagnosis, the meridians, the organs, and acupuncture points. These classics are compilations of observation, not sacred revelation.

At least going by the surviving text, the ancients both recorded phenomena and offered their own explanations for them. Today the two can be pulled apart again: first test whether the phenomenon of “clearer in the morning, calm through the day, worse in the evening, worst at night” actually exists, then separately discuss whether the explanation in terms of “a person’s qi” and “pathogenic qi” holds up. Many illnesses genuinely do fluctuate over the course of a day and night; this is not at all rare on modern hospital wards. Similarity is not identity. The phenomenon can be independently measured. The explanation does not automatically pass along with it.

Look at the present. Ask about the past. Wait for time. The rise and fall over a day and night is simply another scale on which “waiting for time” can be measured.

6. What This Chapter Can Actually Confirm

Placing the ranking of the three brothers, Marquis Huan’s refusal of treatment, the account of Chang Sangjun, Cang Gong’s twenty-five cases, and “clearer at dawn, worse at night” all on the same table, we can now confirm at least one thing:

Early Chinese medicine placed enormous weight on the process of an illness, not merely on the name it was given once it had already appeared.

A rough sequence runs:

Not yet manifest → just beginning → deepening → transforming → treatable or untreatable → outcome.

The methods they used to track this process can be summed up in three sentences:

Look at the present.

Complexion, movement, voice, pulse, cold or heat, whether one can bend and straighten, whether urination and defecation are normal.

Ask about the past.

Exposure to cold, falling into water, diet, exhaustion, sexual activity, and when it all began.

Let time answer.

What happens after ten days; what happens after the first dose, then the second; whether things change by spring; whether the person ultimately lived or died.

Their sharpest instrument was not any device. It was time.

Whether the meridians were gradually abstracted out of these observations will have to wait for later texts to make their entrance. The instances of “seeing” in the histories that cannot currently be verified by ordinary means are, for now, likewise left as they are. What can be verified is the process; what cannot be verified is certain modes of “seeing.” The two should not be blended into a single claim of “already proven” or dismissed together as “pure legend.”

Two thousand years later, we possess eyes they could never have imagined.

The microscope lets us see cells; the CT scan lets us see cross-sections inside the body; the MRI renders soft tissue visible; blood tests turn countless invisible changes into numbers.

But the question this first chapter is asking is not how much more the modern eye can see than the ancient one. That answer comes too easily.

The real question runs the other way:

At a time when not one of these instruments existed, what exactly did the great physicians of ancient China rely on to see that illness was happening?

Cang Gong’s diagnostic records give one answer: observe, inquire, compare, record — then wait for time to deliver the result.

The Bian Que of the Records of the Grand Historian, however, leaves behind another, far harder answer: “seeing people on the other side of a wall,” “seeing the knots of the five viscera in full.”

The first answer can still be studied today.

The second, we set aside here for now.

Because this book has only just begun.

In the next chapter, an even more extreme question appears.

The Crown Prince of Guo has already been declared dead.

The whole state is in mourning.

When Bian Que reaches the city gate and hears what happened, he says only one sentence:

“The Crown Prince is not dead.”

On what basis could he possibly say such a thing?

Chapter Two: Can a “Dead Man” Still Be Saved?

—Bian Que and the Crown Prince of Guo: how the ancients judged life and death

At the crowing of the cock, the Crown Prince collapsed.

By the time Bian Que passed through the palace gate of Guo, not half a day had gone by. People already treated him as dead. The court was in the midst of ritual exorcism; the coffining had not yet taken place.

Rather than asking directly to see the ruler of Guo, Bian Que first questioned a palace attendant fond of medicine:

“What illness has struck the Crown Prince, that the court’s rites of exorcism take precedence over everything else?”

The attendant said: the Crown Prince’s blood and qi failed to circulate on schedule, becoming tangled inside and unable to vent outward; suddenly it erupted to the surface, causing internal harm. His spirit could not hold back the pathogenic influence, which accumulated and could not escape, so that yang became slack and yin grew urgent, and he collapsed suddenly and died.

Bian Que asked: how long has he been dead?

“Since the cock’s crow until now.”

Has he been coffined?

“Not yet. It has not even been half a day since his death.”

Bian Que said: please inform the ruler of Guo that I am Qin Yueren of Bohai in Qi, my home in Zheng. I have heard that the Crown Prince has unfortunately died, and I ask to be allowed in to see him. I can bring the Crown Prince back to life.

The attendant nearly laughed aloud. Surely the master jests? On what grounds could anyone say the Crown Prince can still live? In high antiquity there was a physician named Yu Fu, who could cut the skin and part the flesh, sever the vessels and tie off the sinews, rinse out the intestines and cleanse the five viscera. If your method could match his, the Crown Prince might yet live; if it cannot match his, and yet you say you can bring the dead back to life, such words could not deceive even a babe just learning to cough.

Bian Que sighed. He said: your methods are like looking at the sky through a bamboo tube, or reading a pattern through a crack. When I diagnose illness, I need not first take the pulse, observe the complexion, listen to the voice, and record the outward form before I can say where the illness lies. Hearing the yang aspect of an illness, one can infer the yin; hearing the yin aspect, one can infer the yang. The illness will show itself on the great surface of the body.

He then gave three signs that could be checked by going inside:

Ringing in the ears. Flaring of the nostrils. And, tracing down along the two thighs to the groin, warmth that should still remain.

Why these three places? Why should “ringing in the ears” serve as a basis for judgment? The Records offers no explanation for today’s reader. We leave this as it stands, for now.

Hearing this, the attendant’s eyes went wide and his tongue would not come back down. He carried the message to report to the ruler of Guo.

The ruler of Guo came out from the inner chambers and met Bian Que at the central gate tower. Before he had even finished speaking, he was already weeping aloud: with you, my lord, there is life; without you, he will be abandoned to fill some ditch, gone forever, never to return.

Bian Que said: what the Crown Prince has is what is called “corpse-like collapse” (shi jue). The body lies still as though dead. The Crown Prince is not dead.

He had his disciple Ziyang sharpen the needle-stone, and take the points of the “Three Yang, Five Meetings” on the exterior. After a short while, the Crown Prince revived. He then had his disciple Zibao apply a fomentation divided into five portions, using a compound decoction reduced by eight parts, applying it alternately to both sides beneath the ribs. The Crown Prince sat up. With the yin and yang further harmonized, and after twenty days of decoction, his body was restored as before.

From this, the story spread throughout the realm: Bian Que could bring the dead back to life.

Bian Que himself said:

“I, Yueren, am not one who can bring the dead to life. This is a case of someone who was, by rights, still meant to live — I merely enabled him to rise.”

I cannot bring the dead back to life. This person was, from the start, still meant to live; I simply helped him rise.

1. What Kind of “Death” Did the Histories Record?

This chapter still holds first to the whole book’s discipline: anomalous records in ancient texts are not deleted; phenomena that modern science can test are not exaggerated; content that currently cannot be verified is not hastily judged.

Let us first separate the layers of what the Records has written down.

The first layer: information from the scene.

The Crown Prince had been declared dead. Dead for less than half a day. Not yet coffined. The court was in the midst of ritual exorcism. Bian Que first asked about the illness, then asked how long he had been dead, then asked whether he had been coffined. Before ever entering the inner chamber, he was already gathering time.

The second layer: the prediction made in advance.

Before he had personally examined the patient, he named three checkable signs: ringing in the ears, flaring of the nostrils, warmth remaining in the groin. It was because of this that the attendant was persuaded to go and report to the ruler.

The third layer: the name of the diagnosis.

Within this record, “corpse-like collapse” is precisely the term used to describe this state of “the body still as death, yet the person not dead.”

The fourth layer: the treatment.

Needling the “Three Yang, Five Meetings” — after a short while, revival; then fomentation to both sides beneath the ribs — the Crown Prince sat up; then twenty days of decoction — full recovery.

The fifth layer: Bian Que’s own explanation.

He refused the honor of “bringing the dead back to life.” He said this person had, all along, still been alive.

Earlier in this same biography in the Records, it had already been written that he could “see people on the other side of a wall” and “see the knots of the five viscera in full.” This chapter does not use that passage to serve as proof for the case of the Crown Prince of Guo. The two records can coexist. One says he could “see” a person on the far side of a wall; the other shows him, at the palace gate, first asking about time, then giving signs that could be checked by going inside. The miraculous sentence is not deleted. Nor should the checkable steps be swallowed up by the miraculous sentence.

A note of historical caution must be added as well. Guo was a state enfeoffed in the Western Zhou and Spring and Autumn periods, and was destroyed quite early; the period of Bian Que’s activity is generally placed, by later scholars, in the Warring States era. Putting these two names into the same consultation sits uneasily with the timeline. What Sima Qian wrote is a medical narrative, not an already cross-checked outpatient file. This chapter reads it as a solemnly recorded ancient account of judging life and death, not as a clinically verified triumph.

2. What Did He Ask First at the Palace Gate?

What deserves a slow reading is not the needle that came later, but the three questions Bian Que asked before ever entering.

What illness does the Crown Prince have?

How long has he been dead?

Has he been coffined?

“What illness” asks about a process: the blood and qi failing to circulate on schedule, becoming tangled and unable to vent, suddenly erupting outward. The attendant had already, in the language of the time, described “sudden collapse” as the outcome of some internal disorder. Bian Que did not argue over terminology here. He immediately translated the terminology into time: since the cock’s crow until now, not yet half a day, not yet coffined.

This is the same weapon as in Chapter One. In the story of Marquis Huan, he used ten days, then ten more, then ten more again, to watch the illness change its layer. Here, with the Crown Prince of Guo, he used “half a day” to see whether death had truly been completed. For a physician without instruments, once time is lost, judgment collapses entirely. Once the coffin is sealed, there is no longer any chance to examine at all. So “has he been coffined” was no mere pleasantry — it was a boundary.

The attendant mocked him, invoking the ancient Yu Fu: that was a physician who could truly open the body and cleanse the five viscera. Bian Que’s reply was sharp. He said: you understand medicine as something that must first perform the greatest possible surgery before it earns the right to speak of life and death. What I want to see is whether this person, called dead, still carries within him any sign of life.

And so came those three signs: ringing in the ears, flaring of the nostrils, warmth remaining in the two thighs up to the groin. The histories do not tell us whether the attendant actually went and checked these three things. They record only that the attendant was persuaded. The gap must be left as it is.

At the very least, going by the sequence the Records sets down, the first thing he did at the palace gate was still to ask: what illness, how long, has he been coffined. Only afterward did he offer three signs, not yet personally observed, that could be checked by going inside. The first part is quite ordinary; the second part still leaves a mystery.

Chapter One asked: was the illness going deeper?

Chapter Two asks: if a person appears dead, does that mean they truly are?

The two chapters share the same method. Both place the name back onto the body, and place the body back within time.

3. “Corpse-Like Collapse” Separated Two Kinds of Stillness

Bian Que told the ruler of Guo: this is corpse-like collapse. The body lies still as though dead. The Crown Prince is not dead.

What follows — the long passage about yin and yang, upper and lower, the Triple Burner and bladder, the severed vessel of yang, the broken knot of yin — is the explanatory language of the time. Today there is no need to pretend we have fully understood all of it, still less to translate it hastily into some modern disease name.

What this chapter can hold onto is only the structure of the diagnosis:

Everyone saw “stillness.”

Bian Que asked one further question: is this the stillness of death, or a stillness that can still be reversed?

Within this record, “corpse-like collapse” is precisely the term for the latter kind of stillness. A skilled physician will act; a clumsy one will hesitate until the chance is lost.

This closely resembles the logic of the three brothers in Chapter One. The third-ranked physician always appears at the most dramatic moment. The case of the Crown Prince of Guo is exactly such a moment. Yet afterward, Bian Que insists on dismantling the drama himself: I did not bring the dead back to life — I simply helped someone who was, by rights, still meant to live, to rise again.

This sentence ought to be the soul of this chapter.

Because a very interesting contrast appears here. Earlier in the Records, it says Bian Que could “see the knots of the five viscera in full” — already beyond ordinary modern perception. Yet at the very moment when it would have been easiest to deify himself as one who “brings the dead back to life,” Bian Que instead insisted: I did not bring the dead back to life. This person was never dead at all.

At least within the image of Bian Que that Sima Qian has preserved, the record of extraordinary ability and the boundaries of medicine do not contradict each other. One kind of “seeing” does not mean omnipotence; being able to see what ordinary people cannot does not mean being able to defy the laws of life and death.

The Records on one hand says he could “see the knots of the five viscera in full”; on the other, has him personally deny that he could bring the dead back to life.

Why do these two statements appear together in the biography of the same man?

Let us set this down for now.

4. Needle, Fomentation, Decoction: Three Steps the Histories Recorded

Before the Crown Prince revived, Bian Que had Ziyang “sharpen the needle-stone, to take the exterior points of the Three Yang, Five Meetings.”

“Three Yang, Five Meetings” is generally taken by later commentators to refer to Baihui, at the crown of the head. This is a later interpretation of the point, not a chart of acupuncture points already drawn in the original text of the Records. This chapter records only what the histories actually say: at a location on the outside of the body called the “Three Yang, Five Meetings,” a needle was inserted. After a short while, the Crown Prince revived.

Then came the fomentation. A compound reduced by eight parts, divided into five portions, applied to both sides beneath the ribs. The Crown Prince sat up.

Then came the decoction. Twenty days, full recovery.

All three steps are specific. Specific does not mean the mechanism has been explained. Why needling produced revival “after a short while,” how fomenting both sides beneath the ribs enabled him to sit up, how twenty days of decoction restored him — the Records offers no mechanism in the modern sense. It records only the sequence and the outcome.

So it cannot be written as: the Crown Prince of Guo revived, therefore the meridians have been proven.

Nor can it be written as: one needle brought the dead back to life, therefore acupuncture points are all-powerful.

What can be written is this: within this narrative, the person who judged life and death then used three treatments of the time — needling, fomentation, and decoction. The treatment came after the judgment of “not yet dead” — the treatment was not used to prove the judgment. First came “he may still live,” and only then the needle.

As for whether Bian Que relied on “seeing the knots of the five viscera in full” to see inside the body, the histories say nothing of this in this particular passage. At least going by the recorded steps, questioning came first, verification came after. The two kinds of “seeing” once again stand side by side. This book keeps both.

Whether modern medicine has cases of people “still as death” will be asked separately later. This chapter will not borrow a later disease name now, to explain the story away in advance.

5. What This Chapter Can Actually Confirm

Pulling the case of the Crown Prince of Guo out of legend, a few harder things remain.

First, ancient physicians took seriously the distinction between “appearing dead” and “actually being dead.”

Second, what they used to make this distinction was still observation, questioning, and time: how long the person had been dead, whether they had been coffined, whether warmth remained in the body, and what other signs could still be checked by going inside.

Third, the man himself refused to be deified. The whole realm said he could bring the dead back to life; he himself said he could not.

The gaps that must be left standing are equally clear: whether Bian Que truly met the Crown Prince of Guo, and whether the dates even line up; whether the attendant truly went and checked those three signs; what “Three Yang, Five Meetings” actually referred to at the time; what caused the Crown Prince to collapse; and how much the needling and fomentation actually contributed. The Records provides no independently verifiable evidence on any of these points.

So the answer to Chapter Two is not “Bian Que could bring the dead back to life.”

The answer is:

At a time with no cardiac monitor, no ventilator, and no standard for brain death, early Chinese physicians were already forced to answer an extreme question — if a person is no longer moving, on what grounds can one say they are still alive? The method they offered was to keep looking, keep asking, keep using the hand to check how much warmth remained — and, afterward, to acknowledge honestly: what was saved was someone who was, by rights, still meant to live.

The first answer can still be studied today.

The unverifiable parts of the second answer remain on the table.

Not deleted. Not hastily explained away.

But whether a judgment is correct cannot rest forever on a single legendary scene. The next chapter leaves the court behind, and enters twenty-five case records that state plainly who lived and who died. What must be asked there is no longer what a miracle-working physician saw, but this:

Without instruments, how can one know whether one’s own judgment was actually correct?

Write it down, and let the outcome come back to find you.

Chapter Three: The Twenty-Five Case Records Left by Cang Gong

—How did a physician two thousand years ago know whether he had judged correctly?

The legend of the miracle-working physician has one problem it cannot avoid.

What people remember most easily is always the one time the Crown Prince was saved.

But what about the times he judged wrongly?

What about the patients who could not be cured?

What about when he said someone would fare a certain way in three days, and three days later, nothing of the sort happened?

If none of this were recorded, and only “one needle from Bian Que, and the Crown Prince revived” survived, what we would be left with is not a history of medicine, but a legend.

Chunyu Yi, of the Western Han, left behind something else.

Case records.

He wrote down, one by one, what he saw, what he judged, what treatment he used, and what happened afterward. More importantly, when Emperor Wen of Han asked him:

“In diagnosing illness and determining life and death, can you be entirely without error?”

Meaning: when you judge life and death, can you guarantee you are never wrong?

He did not say yes.

Chunyu Yi answered:

“Time and again I have been wrong; I, your servant Yi, cannot be complete.”

Sometimes I judge incorrectly too. I cannot guarantee I am right every single time.

If Bian Que lets us see the most legendary side of ancient medicine, then Cang Gong gives us, for the first time, the chance to ask a question closer to genuine testing:

You say you saw it — so what happened?

1. Why Did a Man Unwilling to Treat Only the Powerful Begin Writing Case Records?

The Grand Granary Chief was the official in charge of managing the state granaries of Qi, a native of Linzi, surnamed Chunyu, given name Yi. In his youth he was fond of medical arts. In the eighth year of Empress Gao’s reign, he studied under a fellow-commandery physician named Yangqing, holder of the rank of gongcheng. Yangqing, past seventy and without a son, had him first discard the “incorrect prescription books” he had studied before, and passed on to him pulse texts attributed to the Yellow Emperor and Bian Que, methods of diagnosing by facial complexion, and treatises on pharmacology. After three years of study, in treating patients and judging life and death, his predictions were often borne out.

But Chunyu Yi was unwilling to treat only the powerful and privileged, and often claimed illness to avoid seeing certain patients, which brought him considerable resentment among patients’ families. He was eventually reported to the authorities in Chang’an. His youngest daughter Tiying petitioned the throne, offering to become a palace servant to redeem her father’s sentence. Emperor Wen pardoned him, and personally summoned him for questioning: what are you skilled in? Under whom did you study? For how many years? Whom have you treated, for what illnesses, and with what results after treatment? He was to account for it all in detail.

To answer the emperor, Chunyu Yi listed twenty-five clinical cases. Among them were both those who were cured and those who died; both those who received treatment and those judged untreatable. Sima Qian included these answers in the Records of the Grand Historian. This is among the earliest relatively complete sets of medical case records surviving in China. The patients ranged from officials and empress dowagers down to servants, and included women as well.

He later explained, in his own words, why he wrote these things down. Disease names often look much the same, yet whether a patient lives or dies can differ greatly; the methods of pulse diagnosis cannot simply be applied everywhere the same way — one must measure according to this particular person’s situation. His teacher had barely finished transmitting his methods before passing away, and so he began registering the cases he diagnosed, in order to “set a term for judging life and death, and observe where he had gained or lost, checking this against the methods of pulse diagnosis.”

In plain language: he set what he had predicted in advance against what actually happened afterward, to see exactly where he had gotten it right, and where he had gotten it wrong.

This was no longer boasting. This was using outcome to check judgment, after the fact.

Emperor Wen asked an even sharper question: the terms you set for life and death sometimes fail to come true — why is that? Chunyu Yi did not claim every date had been perfectly accurate. He said, “the methods of pulse diagnosis cannot always be verified” — if the mind has not examined the pulse with sufficient precision, the anticipated outcome, whether death or recovery, whether treatable or not, will from time to time be mistaken.

Bian Que, at the very moment he might most easily have become a god, said: I cannot bring the dead back to life.

Cang Gong, standing before the emperor, said: I cannot be entirely without error.

The three chapters of Part One truly close here. Seeing. Judging. And then handing what was seen over to the outcome.

2. A Banquet Where the Food Had Not Yet Been Served

Huang Zhangqing of Qi, elder brother of Consort Huang, hosted a banquet, and Chunyu Yi was among the guests invited. The guests were already seated; the food had not yet arrived. Chunyu Yi looked over at Song Jian, younger brother of the Queen of Qi, and said: you are ill. About four or five days ago, pain struck your lower back and sides, you could not bend down or look up, and your urination has not been normal either. If this is not treated quickly, the illness will sink into the kidneys. While it has not yet entered the five viscera, you should treat it at once. Right now the illness is lodged in the kidneys — this is what was then called “kidney block.”

“Kidney block” was a disease name of the time. We cannot, based on these two characters alone, equate it with any specific modern kidney disease or lumbar condition today.

Song Jian said: it is exactly so. I have long had pain in my lower back and spine. Four or five days ago, after rain, several of the Huang family’s sons-in-law saw a square stone beneath the wall of our storehouse and went to move it for fun. I joined in too, tried to lift it, could not, and set it back down. By evening, my lower back and spine ached, I could not urinate, and it has not improved since.

Chunyu Yi later said that Song Jian’s illness came from a fondness for lifting heavy objects. He knew this, he said, because he had “observed the complexion”: the area of the sun position had grown dry and withered, and the area roughly four fingers wide above the kidney region and below the waist had likewise withered, from which he inferred the illness had begun some four or five days earlier. He then gave him a “soothing decoction” to drink, and after about eighteen days, the record states, “the illness was cured.”

The Records later states explicitly that what Chunyu Yi did first was observe the complexion, using the five-color diagnostic method of the time to explain why he judged that Song Jian had already been ill for four or five days. Exactly how reliable this kind of complexion diagnosis actually is remains a question that can be tested later. This chapter, for now, simply preserves the record: the diagnosis was confirmed by the patient himself, the treatment was recorded, and the outcome roughly eighteen days later was recorded as well.

This is not the same order of legend as Bian Que’s viewing of Marquis Huan, or of the Crown Prince of Guo. There is no palace gate, no claim of “being able to make the Crown Prince live.” But it lets the reader see a more everyday kind of “seeing”: a change was named before the patient had even come seeking a diagnosis, and the outcome was left on record, ready to be checked against later.

3. The Complaint Was a Headache — the Record Did Not Stop at the Headache

Cheng, an imperial censor of Qi, came in complaining of a headache. After taking his pulse, Chunyu Yi believed the real problem did not lie in the head at all. Rather than say so in front of others, he privately told Cheng’s younger brother Chang: the illness lies “between the stomach and intestines” — it is an abscess. In five days it will swell; in eight days he will vomit pus and die.

Here, “abscess” (ju) was the term of the time for a certain kind of internally erupting sore. We cannot, from this single character, write it up as a confirmed diagnosis of any specific modern abdominal infection. More notable still, he also explicitly recorded what he took to be the cause: “the illness arose from wine, and then intercourse.” In today’s terms, Chunyu Yi believed this illness had been brought on by drinking wine, followed by sexual intercourse. Later, the Records states, Cheng died.

This is not a warning some later health-preservation writer happened to tack on. Early Chinese medical texts repeatedly place drinking, sexual activity, exhaustion, and irregular routine within the process by which illness develops. The Huangdi Neijing later contains a very famous line: “taking wine as though it were a beverage, taking recklessness as though it were the norm, becoming drunk and then entering the bedchamber.” The ancients were clearly already observing a question: does a person’s way of life gradually change their body, bit by bit?

More than two thousand years later, modern medicine has confirmed part of this. Heavy drinking on its own can raise the risk of arrhythmia, hypertension, and cardiac injury; a single episode of binge drinking can even trigger what is called “holiday heart syndrome.” Sexual activity temporarily changes heart rate, blood pressure, and autonomic nervous activity, but poses no danger to most healthy people.

So we still cannot say that modern medicine has proven Cang Gong’s judgment about the cause of Cheng’s death.

But he left behind a question still worth pursuing today:

When drinking, sexual activity, exhaustion, and a loss of moderation occur together, are they several unrelated behaviors, or do they compound one another within the same body?

Xun, a Chief Attendant of Qi, fell ill. Other physicians believed it was a case of what was then called “obstruction entering the interior,” and wanted to use needling. After examination, Chunyu Yi said: this is a “surging hernia,” which will block both urination and defecation. Xun admitted: it has already been three days since I could relieve myself. He was given the fire-tempering decoction. After the first dose he could relieve himself; after the second, he recovered.

“Surging hernia” and “fire-tempering decoction” are both names of the time. The decoction was likely something used broadly to clear heat and relieve blockage. We cannot translate it directly into any specific modern prescription.

Taken together, the two cases follow the same method. Rather than accepting the label already offered by the patient or by other physicians, look instead at what change is most urgent right now, then let time provide the answer. One case ended in death; the other, in relief. Both sides are recorded in the diagnostic records alike.

Xin, Chief of the Central Bureau of the Palace Treasury of Qi, developed fever and chills. Chunyu Yi examined his pulse and said: this is the qi of a fever illness; after the sweating brought on by heat, the pulse has already weakened slightly — he will not die of it. He also said: this illness arose from severe cold suffered in flowing water, followed afterward by heat.

Xin said: exactly so. Last winter, sent by the King of Qi on a mission to Chu, he reached Yangzhou in Ju county, where a bridge had collapsed. He had not wanted to cross, but his horse bolted, and he fell into the water, nearly drowning. He was pulled out with his clothes soaked through. After a while his body first turned cold, then grew hot as fire, and he has feared cold ever since.

Chunyu Yi used a fire-tempering decoction to drive out the heat. After the first dose the sweating stopped; after the second, the heat receded; after the third, the illness was gone. He then had him take further medicine, and after twenty days his body had recovered as before.

What Cang Gong was pursuing, above all, was how this person had arrived, step by step, at where he now stood. The trigger, the sequence, the pulse-based judgment, the changes after each successive dose — everything is present.

There are also cases that look, on the surface, smaller. A senior official of Qi suffered from tooth decay. The transmitted text of the Records reads “moxa applied to the left greater yang-brightness vessel,” though later sources sometimes cite it as “the left hand yang-brightness vessel.” Afterward, a decoction of bitter root was used as a mouth rinse, applied daily for about five or six days, and the record states the illness was cured. The cause was recorded as: exposure to wind, and the habit of sleeping with the mouth open and not rinsing after eating. The classical texts themselves also carry problems of transcription and textual variation. This does not diminish the value of the record — if anything, it reminds us that even what the ancients wrote down must first be read accurately before it can be discussed.

A Marshal of Qi, surnamed Chunyu, suffered from “flooding diarrhea” — food passing straight through and out. This was a disease name of the time, not to be equated directly with any specific modern form of diarrhea. Cang Gong discovered that he had just eaten his fill of horse liver at the king’s residence before riding a fast horse home. Behind the disease name, once again, stood a concrete account of what a person had just done.

Look at the present. Ask about the past. Wait for time. Cang Gong turned these three steps into sentences that could be checked again later.

4. The Doctor Said There Was Illness — He Said, “I Feel No Pain at All”

A servant belonging to a retainer of the Chancellor of Qi accompanied his master into the palace for an audience. Chunyu Yi saw him eating outside the palace gate, observed a sickly cast to his complexion, and told a eunuch named Ping, who was fond of pulse diagnosis and studying under him: this is damage to the spleen qi. By spring he will suffer blockage and be unable to eat; by the pulse method, by summer he will hemorrhage blood and die.

Ping went and told the Chancellor: your retainer’s servant is ill, gravely so, and not far from death. The Chancellor summoned the retainer and asked: is your servant ill?

The retainer said:

“The servant has no illness; there is no pain anywhere in his body.”

Come spring, the man did indeed fall ill. By the fourth month, he hemorrhaged blood and died. Cang Gong later explained that what he had seen was the color of spleen damage: from a distance, yellow; on closer inspection, like the color of a dead, withered grass root. Other physicians, not recognizing this, believed there was a large parasite in the abdomen. He also used the explanatory framework of the time to connect the onset in spring and the death in the fourth month to the Five Phases and the methods of pulse diagnosis.

These explanations belong to the ancients’ own theoretical framework. Today we cannot write “earth failing to overcome wood” as an established piece of pathology. But as a scene, this case is especially hard-edged: the physician said there was illness; the person himself said he felt no pain at all. Once again, self-perception lagged behind the change the recorder could see.

A man named Cao Shanfu, of Zhangwu village in Qi, fell ill. After taking his pulse, Chunyu Yi said: lung wasting-thirst, complicated further by chills and fever. He will die; it cannot be treated. He should be well cared for and nourished; there is no need for further medical treatment. “Wasting-thirst” was a disease name of the time, not to be directly equated with modern diabetes or tuberculosis. The pulse method indicated: in three days he will become manic, rising and trying to run off wildly; in five days he will die. He died as predicted. Cang Gong also recorded that this illness arose from violent anger followed by intercourse; the court physician of Qi had already applied moxibustion and medicine beforehand, causing diarrhea and depleting the patient’s interior, and had then applied moxa again to the Lesser Yin point, further damaging his qi. He recorded not only his own judgment, but what others had already done, and why he believed further needling or medicine should not be given.

A commoner of official rank named Xiang Chu, of Anling Banli, suffered from “male hernia” — a disease name of the time for a certain category of hernia-type illness. Chunyu Yi warned him: under no circumstances undertake any strenuous activity — exertion will cause him to vomit blood and die. Xiang Chu later went to play a game of kickball, sweated heavily, and did indeed vomit blood. Examining him again, Cang Gong said he would die the following evening. The man died as predicted.

A physician in attendance to the King of Qi, named Sui, made his own elixir from the “five minerals” and took it. Chunyu Yi pointed out the danger of taking mineral preparations; Sui did not listen, and later died of an abscess.

These cases cannot be used to prove that “pulse diagnosis can precisely foretell the date of death.” The specific dates given may have been rounded for narrative neatness, or may reflect the numerological habits of the time. Even Emperor Wen himself had asked: your predicted terms sometimes fail to come true — why is that? Cang Gong himself admitted that the methods of pulse diagnosis cannot always be verified.

But as records, they still leave behind something very important: Cang Gong did not simply say “this person’s body is not well” — he often wrote down something far more specific: what would happen, and by when; under what circumstances things would worsen; what must not be done, or else what would follow; and how things changed after the first dose, and after the second.

Ancient case records are texts assembled after the fact, and cannot be equated with a genuinely pre-registered modern experiment. But they already contain the seed of a method:

What makes a judgment genuinely valuable is not that everything can be explained once it has already happened, but whether, before it happens, the judgment dares to say what will come next.

5. He Admitted He Could Be Wrong — Yet These Twenty-Five Cases Are Not a Complete List of His Errors

This chapter opened by asking: what about the times he judged wrongly?

Chunyu Yi admitted, “time and again I have been wrong.” Yet the diagnostic records he listed for Emperor Wen are not a randomly sampled, complete database of every case he ever saw. Looking closely at these examples, most of them involve a judgment of “untreatable” followed by death, or a warning given in advance that the patient failed to heed, followed by deterioration. This still comes closer to “the prediction was written down, and the outcome came to pass,” rather than a list he himself explicitly marked as “here is a time I got it wrong.”

One cannot, simply because he admitted to making mistakes, assume that these twenty-five cases preserve every error he ever made in full. Still less should one manufacture, on his behalf, some “standard error case” that cannot actually be found.

He later said that he had treated many other cases besides these, but with the passage of years he had largely forgotten them, could not recall them all, and did not dare speak of what he could not remember clearly. Memory selects. The examples chosen in answer to the emperor’s questions were never, from the start, the whole of a lifetime’s practice.

So the greatest change brought about by writing judgments down was not that the physician would never err again from that point on — it was that “error,” for the first time, had a chance of being discovered at all.

If only stories are told, errors can vanish.

If diagnostic records are kept, what is said today may come back to find you tomorrow.

He also told Emperor Wen: in treating a patient, one must first take the pulse. Those whose pulse is already ruined and disordered cannot be forcibly treated; only those whose pulse still runs smoothly should be treated. Even so, errors will still occur.

This already approaches a kind of professional boundary. Not “I can see everything,” but “I write down what I see, so that even my errors have a chance of being seen.”

6. What This Chapter Can Actually Confirm

Pulling the twenty-five cases out of any “roster of miracle physicians,” a few harder things remain.

First, by the early Western Han, a fairly complete awareness of case documentation had already emerged. Name, status, symptoms, pulse or complexion, judgment, treatment, and outcome did not have to wait for the modern hospital to come into existence.

Second, one motive behind the record-keeping was precisely to check gains against losses. Without an outcome coming back to meet the judgment, the methods of pulse diagnosis would remain nothing more than a set of claims.

Third, among the cases Cang Gong submitted to the emperor were both those he cured and those he judged untreatable, as well as cases where he gave a warning that went unheeded, followed by deterioration and death. Death was not erased from this body of records.

Fourth, he admitted before the emperor that he could not be entirely without error. This sentence can be read alongside Bian Que’s “I am not one who can bring the dead to life.” One refused to have revival written up as resurrection; the other refused to have his diagnostic records written up as proof of infallibility.

The gaps that must be left standing are equally clear. The twenty-five cases are examples he could still recall, and chose to present, in answering the emperor’s summons. The dates may have been tidied up somewhat. The complexion diagnosis, the pulse readings, and the explanations drawn from the Five Phases all use the language of the time, and cannot be translated directly into modern pathology. Exactly what diagnosis-by-observation actually perceived can be tested later — this chapter draws no conclusion on it.

So the answer to Chapter Three is not “Cang Gong already possessed a scientific method.”

The answer is:

Without instruments, how can one know whether one’s own judgment was actually correct? Write it down. Let what happens eighteen days later, after the first dose and the second, after spring arrives, come back to find that original judgment.

Bian Que saw the trajectory of illness.

Bian Que judged life and death.

Cang Gong handed “seeing” over to the outcome, for testing.

Watching one person at a time, we have come this far. But once hundreds or thousands of people fall ill at the same time, a physician can no longer simply remember twenty-five individual cases. In the next chapter, the scale suddenly grows much larger. Zhang Zhongjing will face a great epidemic. The question is no longer merely “will this person die,” but:

Why can the same disease not be treated the same way in different people?

Chapter Four: In Under Ten Years, Two-Thirds of the Clan Had Died

—Why couldn’t Zhang Zhongjing simply ask “what disease is this”?

Bian Que saw illness moving deeper.

The Crown Prince of Guo forced physicians to distinguish two kinds of stillness.

Cang Gong wrote his judgments down, and waited for the outcome to come back and find him.

But once illness no longer struck a single person, but instead claimed a large portion of an entire clan’s lives in under ten years, a physician could no longer simply remember twenty-five individual cases.

Near the end of the Eastern Han, Zhang Zhongjing wrote the following lines in a preface:

“My clan was originally a large one, numbering nearly two hundred. Since the Jian’an era began, in not even ten years, some two-thirds have died; of these deaths, seven in ten were due to cold damage.”

In plain language: my clan once numbered close to two hundred people. In under ten years since the Jian’an era began, roughly two-thirds have died; of those deaths, roughly seven in ten were connected to “cold damage.”

“Cold damage” (shanghan) is a disease concept in ancient medicine with a scope considerably broader than the everyday modern sense of “catching a cold” — it covers a category of externally contracted illness and the complex changes that might follow. We cannot, from the two characters “cold damage” alone, determine what virus, bacterium, or modern disease each of these deceased actually suffered from.

What the preface describes is mass death within his own clan, most of which he classified under the name “cold damage.” He did not write: my clan died in a single great epidemic. The late Eastern Han did indeed see records of severe epidemic disease — that is a larger historical background, not something this single sentence directly states as “one great epidemic.” This chapter begins from the death toll he himself wrote down.

Only then does it turn to the real question.

When a physician is no longer facing a single Crown Prince, or twenty-five diagnostic records, but the members of his own clan dying one after another, can he still afford to ask only “what disease is this”?

1. Seeing Death First, Discussing Method After

Zhang Zhongjing, a native of Nanyang, given name Ji. Reliable material on his life is scarce. Later tradition holds that he served as Governor of Changsha, though the details remain disputed. This chapter does not build its case on any official title. What can be more firmly grasped is the reckoning he wrote down for his own book: a clan of nearly two hundred people, in under ten years, roughly two-thirds dead; of the deceased, roughly seven in ten classified by him under “cold damage.” and as “weighing the pulse and differentiating patterns” (ping mai bian zheng) to compile the Treatise on Cold Damage and Miscellaneous Diseases. In plain language: he earnestly sought out the teachings the ancients had left behind, gathered prescriptions widely from many schools, and combined pulse signs with clinical patterns to distinguish cases, and from this wrote the book.

If the only question were “is this cold damage disease,” the answer might already seem settled. But living people do not fall ill in identical ways. Some feel cold, others feel hot; some sweat, others do not; some are thirsty, others are not; some are constipated, others have diarrhea; some have a floating pulse, others a sunken one.

Treatment is even more troublesome. Some patients should be made to sweat, and improve once they do; others, made to sweat, may only worsen. Some should be purged; for others, purging would exhaust them. All of it is called “cold damage,” yet it cannot be treated with a single bag of the same medicine.

So Zhang Zhongjing was forced to change the question from “what is this disease called” to:

What state is this person in right now? Where is this likely to go next?

This is not a case of us teaching the reader the term “pattern differentiation” first. It is the problem Zhang Zhongjing was forced to solve in the face of death.

2. What He Was Most Dissatisfied With Was Physicians Being Too Hasty

In the same preface, Zhang Zhongjing also looked back at the figures we have written about in the previous three chapters: “In middle antiquity there were Chang Sangjun and Bian Que; in the Han there were Gongcheng Yangqing and Cang Gong.” The line running from Bian Que to Cang Gong is not something this book has strung together for effect — Zhang Zhongjing himself placed them in his preface as forerunners.

He then criticized the carelessness of physicians of his time: “Facing the patient only briefly, they immediately prescribe decoctions.” In today’s terms: the doctor and patient have barely been face to face before medicine is already being handed out.

Worse still: “They press the pulse at the wrist but not further along the arm; they hold the hand but do not check the foot...” Roughly: pulse-taking covers only part of the arm, without a full examination of the areas that should be checked, and the various methods of diagnosis are not cross-checked against each other.

Finally he delivers this line: “This is nothing but peering through a tube. To try to distinguish death from life this way is truly difficult!”

In plain language: this is like looking at something through a narrow tube — you see only a sliver. Trying to judge life and death this way is extremely difficult.

If we translate his criticism into an easily understood modern scene: it is as if a feverish person walks in, and is immediately given a prescription “for fever”; a person who feels cold walks in, and is immediately given a prescription “for coldness.” What Zhang Zhongjing objected to was precisely this kind of practice — rushing to a judgment before the whole person has been examined.

Because two people both labeled with “cold damage” may, at this moment, be in completely different bodily states.

The name of the disease is only an entry point, not a prescription.

3. What He Saw: Not a List of Disease Names, But a Chain of Changes

The Treatise on Cold Damage and Miscellaneous Diseases was later split into two texts that were transmitted separately: the Treatise on Cold Damage and the Essentials from the Golden Cabinet. The books contain a great many decoctions, pulse-and-pattern correlations, and rules of what is and is not permitted. This chapter will not lay out the Greater Yang, Yang Brightness, Lesser Yang, Greater Yin, Lesser Yin, and Reverting Yin stages as though unpacking a textbook table of contents. Let us first look at the observations he wrote down again and again.

Faced with what looks like the same category of externally contracted feverish illness, he would ask: does the patient feel cold or hot? Is there sweating or not? Is there thirst or not? Is the abdomen full, or is there diarrhea? Does the patient want to drink water or not? Can they eat or not? Is the pulse floating or sunken? Is consciousness clear, or has the patient already become agitated and begun to speak deliriously?

These questions look trivial. But they all answer the same thing: where the illness is currently expressing itself, how much capacity for endurance and recovery the body still has, and whether the illness is moving outward, inward, or has already produced clear signs of depletion.

He often recorded time. One day, two days, six or seven days. If a certain sign appears, and then another sign follows, a certain method should be used; if a certain method has already been used, it should not be used again. Cang Gong wrote things like “recovered in eighteen days” and “will swell in five days.” Zhang Zhongjing expanded this sense of time into a full map of management: not one person’s eighteen days, but the several paths a category of illness might follow across different people.

He also recorded errors. Mistaken use of sweating, mistaken purging, mistaken use of fire-based treatments — these could push a person into a more dangerous state. Some passages in the book read almost like warnings to future physicians: the method you just used may have already taken the wrong path. Cang Gong admitted, “time and again I have been wrong.” Zhang Zhongjing turned “wrongness” into a set of identifiable, transformed patterns (bian zheng).

How the ancients explained these changes will later draw on yin and yang, exterior and interior, cold and heat, deficiency and excess, and the framework later called the “Six Meridians” (liu jing). We will not let those labels crowd in just yet. Let the reader first form a question on their own: given that diseases sharing the same name cannot be treated the same way, how exactly did he classify these different states?

4. Two Thousand Years Later, the Same Question Returned

In 2020, a virus that came to be known as COVID-19, later named SARS-CoV-2, spread rapidly around the world. Modern medicine had tools Zhang Zhongjing could never have imagined: nucleic-acid testing, genetic sequencing, blood-oxygen monitoring, CT scans, vaccines, and antiviral drugs. It first solved a problem the ancients could not solve: why were so many people falling ill at the same time?

We could identify the pathogen.

But once the shared pathogen had been identified, an old question did not disappear: why, among people infected with the same virus, did some show almost no symptoms, some develop fever and cough, some progress to pneumonia, some require oxygen therapy, and a small number ultimately die?

It would be wrong to frame this as: Zhang Zhongjing treated according to the individual, while modern medicine gives everyone the same prescription. This contrast does not hold up to scrutiny. The World Health Organization’s clinical pathways for COVID-19 explicitly require first assessing symptoms, severity, age, underlying conditions, immune status, and risk of progressing to severe disease; treatment differs between low-risk and high-risk, non-severe and severe cases. UK guidelines were likewise never “everyone who tests positive gets the same drug.” Vaccines target a shared pathogen for population-level prevention, but treatment after infection still has to be stratified.

Zhang Zhongjing had no concept of a virus. He took a different path. He continuously recorded the differences a patient showed right now: cold or hot, sweating or not, thirsty or not, able to eat or not, how the stool looked, what the pulse showed, and how things changed after treatment.

Modern medicine first asks: what have they been commonly infected with? Then it stratifies by severity and risk factors.

Zhang Zhongjing placed special emphasis on this: even when the cause is classed under the same broad category, this particular person’s state right now may still differ, and so may the appropriate treatment.

The two approaches are not simply a matter of one being right and the other wrong. The real question worth asking is: what, exactly, does each classification method manage to capture about the human body?

There is also a counter-example that must be recorded here. If a patented Chinese medicine ends up being given to “everyone who tests positive, without distinction” — as happened with certain products widely used during the pandemic — that comes close to: one modern disease name, matched to one fixed patent medicine. This is exactly the path Zhang Zhongjing tried to avoid — same disease name, therefore same prescription. For that particular product, randomized studies have reported that, added on top of standard care, certain symptom-recovery indicators improved; subsequent reviews have also pointed out methodological limitations, and no overly strong conclusion should be drawn from them. This chapter does not render a verdict on that drug’s efficacy. It raises only a sharper question:

If Chinese medicine is turned into standardized patent formulas and then dispensed on a mass scale according to modern disease names, is that still, in Zhang Zhongjing’s sense, “looking at what state this particular person is in right now”?

5. Same Disease Name Does Not Mean Same State

If a modern reader were to take away only one sentence, it should not be “Zhang Zhongjing invented Six-Meridian pattern differentiation,” but rather: the same disease name does not mean the same bodily state; different states cannot be treated the same way. The disease name is only an entry point, not a prescription.

This is the same river Cang Gong was already navigating — only now the river has widened. Cheng complained of a headache; Cang Gong did not stop at the headache. Xun was diagnosed by other physicians as a different illness requiring needles; Cang Gong instead looked at his blocked urination and defecation. What Zhang Zhongjing faced was this: everyone calls it cold damage, yet whether there is sweating or not, thirst or not, whether purging is appropriate or not — these differences are the difference between life and death.

That is why he emphasized combinations of ingredients, rather than matching a single herb to a disease name. Cinnamon Twig Decoction and Ephedra Decoction have since been discussed at great length. This chapter needs the reader to know only one thing: both formulas might be used for externally contracted illness, not because the disease name is the same, but because the presence or absence of sweating, aversion to wind or cold, the pulse, and the body’s responses differ. Sweating that should happen is one path; sweating induced when it should not be is another.

Sayings like “one dose and it shows improvement, two doses and it is resolved” are later generations’ summary of how quickly classical formulas can work, and should not be read as Zhang Zhongjing guaranteeing that every patient recovers in two doses. What can be said is this: what he pursued was matching treatment to the pattern, not pasting one fixed formula onto every patient who shared a disease name.

What can be confirmed today is this: infectious and febrile illnesses naturally produce different courses in different people, owing to age, genetic background, prior immunity, underlying conditions, and metabolic state. Modern medicine already knows that “the same pathogen” has never meant “the same bodily response.”

Chinese medicine later raised a further question: does this kind of difference already exist before the illness begins?

Today’s theory of constitutional types in Chinese medicine divides people into nine constitutions: balanced, qi-deficient, yang-deficient, yin-deficient, phlegm-damp, damp-heat, blood-stasis, qi-stagnation, and special/allergic constitution. This nine-fold classification was not proposed by Zhang Zhongjing himself, and it cannot simply be projected backward onto the Treatise on Cold Damage. But it leaves behind a hypothesis that can be tested by modern methods:

If two people infected with the same pathogen were already in different bodily states before falling ill, are they, after infection, more likely to move toward different “patterns” and different disease courses?

This need not be settled by argument. Constitutional classification could be completed before illness occurs, and then, after infection, temperature, symptom clusters, heart-rate variability, inflammatory markers, metabolism, gastrointestinal activity, and recovery time could all be observed. A more rigorous study could even write down its predictions in advance, then see whether reproducible differences emerge between the groups.

If there is no difference, that is a result.

If a difference exists but does not match the nine constitutions, that too is a result.

If a stable correspondence appears again and again across different populations, then it truly becomes worth pursuing further:

Can modern instruments also distinguish the categories of people that the ancients distinguished using their eyes, their hands, and long-term observation?

The names themselves can be unpacked later. For now, this chapter holds on to that death toll, the phrase “briefly face to face, and the decoction is already prescribed,” and the word “tube.”

6. What This Chapter Can Actually Confirm

First, Zhang Zhongjing turned the deaths in his own family into a preface. In under ten years, two-thirds had died; the starting point of his medical method was not a study, but the successive deaths of his own kin.

Second, in that same preface he names Chang Sangjun, Bian Que, Yangqing, and Cang Gong by name, and criticizes the physicians of his time for prescribing decoctions after only a brief glance. The disease name is only an entry point, not a prescription.

Third, he began organizing the differences among individual cases into rules that could be applied repeatedly: when sweating is permissible and when it is not; when purging is permissible and when it is not; and what to do once a treatment has already gone wrong.

The gaps that must be left standing are equally clear. The death toll in the preface is the author’s own account and cannot be independently verified against household registers. “Seven out of ten deaths were due to cold damage” was his own classification at the time, not a laboratory statistic, and cannot prove that the entire clan died of the same pathogen. The text itself has gaps in transmission and was later edited by later hands. The names of the Six Meridians and the precise correspondence between patterns and formulas have not yet been unpacked in this chapter. The nine constitutional types are even less the protagonist of this chapter — they are simply a seed that can be tested later.

Bian Que saw illness moving through its stages.

Cang Gong demanded that judgment be answerable to outcome.

Zhang Zhongjing, confronted with mass death, refused to ask only what the disease was called.

The next chapter will finally arrive at needles, drugs, anesthesia, and just how far ancient surgery went. That is Hua Tuo’s frontier.

People who appear to have the same illness — some should be made to sweat, while for others, sweating would only make things worse. How did the ancients actually perceive this difference?

More importantly — can a classification made two thousand years ago, without a microscope, be re-measured today by modern instruments?

Chapter Five: Just How Far Did Hua Tuo Go?

—The real boundary of needles, drugs, anesthesia, and ancient surgery

Two clerks, Ni Xun and Li Yan, lived together. Both had headaches and fever; their suffering looked identical.

“Both had headache and fever; what they suffered was exactly the same.”

Yet Hua Tuo said: Xun should be purged, Yan should be made to sweat.

Someone found this strange: isn’t it the same illness?

Hua Tuo said: “Xun has excess on the exterior, Yan has excess on the interior, so the treatments should differ.” He is exterior-excess, Yan is interior-excess, so the treatments should be different. He gave each of them medicine accordingly. The next morning, both were up and about.

“Exterior excess” and “interior excess” were terms of judgment used at the time, and cannot be translated directly into a specific modern physiological state. But this scene is almost an echo of Chapter Four: nearly identical symptoms, opposite treatments. Zhang Zhongjing turned this problem, born of deaths in his own family, into a book. Hua Tuo turned it into two patients living under the same roof.

But Hua Tuo’s biography also contains another passage, which is why later generations called him the “father of surgery”: when needles and drugs could not reach far enough, cutting and excision were required; the patient would drink “boil-numbing powder” (mafeisan), and in a short while would become as though drunk or dead, with no awareness at all, at which point the incision would be made. If the disease was in the intestines, the intestines would be cut open, washed, and then the abdomen sewn shut and ointment applied.

Needles, drugs, anesthesia, open abdominal surgery. The boundary is suddenly pushed very far out. What this chapter asks is not how miraculous Hua Tuo was, but: exactly how far did the histories actually record him going? What can be kept as record, and what cannot yet be written up as verified surgical history.

1. A Physician Who Refused Office

Hua Tuo, courtesy name Yuanhua, was a native of Qiao in the state of Pei, also known as Fu. He traveled and studied around the Xuzhou region, and had a broad knowledge of several classics. Chen Gui, chancellor of Pei, recommended him as a “filial and incorrupt” candidate for office; Grand Commandant Huang Wan summoned him — he went to neither. The histories say he understood the arts of nurturing one’s nature; contemporaries thought that although he was nearly a hundred years old, he still looked to be in his prime.

He was skilled in prescriptions and medicines. When treating illness, he combined only a few ingredients in a decoction; he knew the proportions by heart and did not need to weigh them again — once cooked, the patient drank it, he gave instructions for moderation, and after he left the patient often recovered. If moxibustion was needed, it was no more than one or two sites, each no more than seven or eight cones. If needling was needed, likewise no more than one or two points. When inserting the needle, he would say: the sensation should travel to a certain place — tell me when it arrives. When the patient said “it has arrived,” he would withdraw the needle, and the illness would improve accordingly.

These lines should not yet be read as “one needle from Hua Tuo and the illness was cured.” What they record is a very specific set of working habits: few kinds of medicine used, few sites for moxibustion, few points for needling, and the patient required to report where the needling sensation had traveled. What that sensation actually is, the histories do not explain in modern neurological terms. We leave that gap as it stands.

Only then comes the sentence that pushes the boundary far outward: when needles and drugs could not reach, cutting and excision were required.

2. Boil-Numbing Powder: The Name Was Recorded, the Formula Was Not

What can be confirmed is that both the Records of the Three Kingdoms and the Book of the Later Han record “boil-numbing powder” (mafeisan) and its effect of making the patient “as though drunk or dead” and “without any awareness.” The original text reads: the patient would drink the boil-numbing powder, and in a short while would become as though drunk or dead, with no awareness at all, at which point the incision would be made. If the illness was in the intestines, the intestines would be cut open and washed, then the abdomen sewn and ointment applied. The histories record that after four or five days the patient had “recovered” — meaning a clear recovery, and without pain — and had settled fully in about a month. This is the outcome as recorded by the biographer, not a postoperative record kept by modern surgical standards.

What cannot be confirmed is what the powder was actually composed of, how deep the anesthesia went, whether it could be reliably controlled, and how many times such surgical procedures were actually repeated. Later writers have speculated about datura or aconite, but these are later guesses, not a formula given by Chen Shou, the historian. To take “as though drunk or dead” and declare it “the world’s first successful general-anesthesia surgery” oversteps the historical record.

The record is not deleted; the outcome is not upgraded on its behalf.

3. Just How Far Did the Cutting Actually Go?

The main text of the Records of the Three Kingdoms states, in summary, that when Hua Tuo encountered internal disease that needles and drugs could not manage, he would use boil-numbing powder and then “cut and remove”; if the disease was in the intestines, the intestines would be “cut open, washed, and the abdomen sewn shut with ointment applied.”

A somewhat later source, the Separate Biography of Hua Tuo, included in Pei Songzhi’s commentary, preserves a more specific story: a patient suffered severe abdominal pain for more than ten days, and his sideburns and eyebrows had fallen out. Hua Tuo said, “this is a spleen half rotted through; it can be treated by opening the abdomen.” The record states that the patient was given medicine and made to lie down, the abdomen was opened for direct examination, and the spleen was indeed found to be half decayed; the necrotic portion was then excised, the dead tissue scraped away, medicine applied, and the patient had recovered after a hundred days.

Here the different tiers of source material must be stated plainly: the former is the main text of Chen Shou’s Records of the Three Kingdoms; the latter is a separate biography quoted in Pei Songzhi’s commentary. Both are worth keeping, but the fact that the two stories echo each other should not be taken as proof that the safety and reproducibility of ancient abdominal surgery has already been established.

There is another passage in the main text: a scholar-official felt unwell. Hua Tuo said: the illness runs deep, and by rights the abdomen should be opened to remove it. But your allotted lifespan is no more than ten years, and this illness will not kill you. Endure it for ten years; when your allotted years are up, there will be no need to have yourself cut open over this.

If this passage too is taken as a record, it actually suggests something else: opening the abdomen was not, for him, a casual default choice. Sometimes he judged that it should be done; sometimes he judged that it need not be.

The scene in the novel Romance of the Three Kingdoms where Cao Cao’s skull is split open to remove “wind phlegm” is fiction. The official history records only that Cao Cao suffered from “head wind,” that Hua Tuo needled the diaphragm area, and that the symptom eased at once. We should not bring the novel’s axe onto this chapter’s operating table.

4. Cao Cao’s Head Wind, and a Scroll That Was Burned

When Cao Cao, the future Emperor Wu of Wei, heard of him, he summoned Hua Tuo to keep him constantly at his side. Cao Cao suffered from head wind; every time it flared up, his heart would race and his vision would blur. Hua Tuo needled the diaphragm area, and the symptom eased at once. Later, when the illness grew more severe, Cao Cao had him attend to it specifically. Hua Tuo said:

“This is close to incurable. With constant treatment, the years can be prolonged.”

In plain language: this illness can hardly be cured outright, but ongoing treatment can extend his years.

If one quotes only the first half, Hua Tuo looks as though one needling cured Cao Cao outright; read together with the second half, the picture changes completely: needling could relieve the symptom, but Hua Tuo himself believed the root of the illness could hardly be removed, and that it would require long-term management. The thing to fear most in reading old texts is keeping only the miraculous half-sentence.

Hua Tuo, having been away from home for a long time, wished to return, and said he had received a letter from home requiring a temporary leave. Once home, he repeatedly delayed his return, citing his wife’s illness. Cao Cao wrote to summon him back again and again, and also ordered the local commandery to send him back under escort. Relying on his own skill, and weary of being made to serve, Hua Tuo still did not set out. Cao Cao, enraged, sent men to investigate: if the wife was truly ill, they were to give small red beans and extend the deadline; if it was a lie, he was to be arrested. He was thus imprisoned. Xun Yu once said: Hua Tuo’s skill is indeed refined, and since human lives depend on it, he ought to be spared. Cao Cao did not listen, and eventually had him executed.

Facing death, Hua Tuo took out a scroll and gave it to the jailer, saying: this can save people’s lives. Fearing to break the law, the jailer dared not accept it. Hua Tuo did not press him, asked for a fire, and burned it.

Cao Cao’s head wind persisted afterward. When his beloved son Cang Shu fell gravely ill, he sighed: I regret having killed Hua Tuo.

The book that could have saved lives was burned. This is one of the most painful endings in the history of medical knowledge: the judgments, the formulas, perhaps even the details of anesthesia and surgery, never entered a text that the next generation could check. Cang Gong handed his twenty-five cases over in answer to the emperor’s questions, and so they survived. Hua Tuo handed a scroll to a jailer, and so it vanished.

What was seen can sometimes, because of power, temperament, and a single fire in a prison cell, never again be examined by those who come after.

5. The Same Act — Possible in Health, Not Necessarily Possible After Illness

The main text of Hua Tuo’s biography also contains two more records that connect with Cang Gong’s case of “drink and then intercourse.”

First, a man named Yan Xin. Hua Tuo saw him and said:

“Your face shows a serious illness approaching. Do not drink too much wine.”

Yan Xin walked several li on his way home, then suddenly grew dizzy, fell from his carriage, and died that same night.

Next, a man named Dun Zixian. He had just recovered from an illness, and after examination Hua Tuo said:

“You are still weak and have not truly recovered. Do not engage in exhausting activity; sexual intercourse now would be fatal.”

His wife came from over a hundred li away to see him, and the two spent the night together. About three days later, the illness returned, and the biography states that the outcome was exactly as Hua Tuo had said.

Cang Gong had written of Cheng that his illness was “brought on by wine, followed by intercourse.” With Hua Tuo, we now have: Yan Xin told “do not drink too much wine,” and Dun Zixian, still weak after illness, told “intercourse now would be fatal.” This can no longer be written off as one ancient physician’s chance prejudice against wine and sex. At least going by these historical sources, the relationship between drinking, sexual activity, exhaustion, and recovery from illness genuinely and repeatedly entered the field of observation of these physicians.

It still cannot be written as: the ancients had already proven that sexual activity can kill. What is genuinely worth asking is:

Why did ancient physicians repeatedly conclude that, in certain states of illness or convalescence, wine, sex, and physical exertion — ordinarily tolerable — could suddenly become a dangerous burden?

Whether a behavior is inherently dangerous, and whether a particular body can withstand it at a particular moment, are two different questions. This is entirely consistent with the principle Zhang Zhongjing had just established: different states require different treatment.

6. Two Students: One Learned a Practice to Treat Illness, One Needled Deeper Than Anyone Else

Hua Tuo left behind more than needles, drugs, and legendary surgery. The official history also records two of his students.

Wu Pu of Guangling and Fan A of Pengcheng both studied under him. Wu Pu later practiced according to Hua Tuo’s methods, and the histories say he “saved and completed the recovery of many” — he cured a great many people. Fan A had a different specialty: needling.

What Hua Tuo taught Wu Pu was not another formula for boil-numbing powder, but how a person ought ordinarily to move.

“The body wants exercise, but should not be pushed to its limit. Movement helps digest the essence of food, and lets the blood and vessels flow freely, so illness has no chance to arise — much as a door hinge that turns often does not rot.”

In plain language: the body needs activity, but should not be exercised to exhaustion. Moving helps the essence of food be digested, and lets the blood vessels flow; illness does not easily arise. A door hinge, because it turns constantly, does not rot.

He then described exercises the ancients had practiced: hanging and stretching like a bear, turning to look back like an owl, pulling at the waist, moving the joints, in pursuit of a long and vigorous old age. He himself had a set of exercises called the Five Animal Frolics — tiger, deer, bear, ape, and bird. These could also dispel illness and keep the legs agile, serving in place of guided stretching. When the body felt unwell, one should get up and perform one of the sets; after breaking a sweat, powder could be applied, and the body would feel light, the appetite restored.

Wu Pu practiced accordingly. His biography records that he lived past ninety, with keen hearing and eyesight, and all his teeth intact. This is the outcome as recorded by the biographer, not an independently verifiable longevity trial. What it is meant to show is this: for Hua Tuo, exercise, guided stretching, and needles and drugs were all placed on the same map. When ill, needles could be used, drugs could be used, and — according to the records — even incision; when not ill, or only mildly so, the body should first be set moving, but never pushed to its limit.

Fan A took a different path. He asked his teacher for “something that could be taken as a supplement, beneficial to people,” and Hua Tuo gave him a powder made of lacquer-tree leaves and green sticktights. His biography states that after taking it, Fan A lived past a hundred, his hair never turning white.

What drew even more comment from later generations was his needling. Ordinary physicians of the time all said that the area between the back and the chest cavity could not be needled carelessly, and that needles should go no deeper than four fen. Fan A could needle the back to a depth of one or two cun, and points such as Jujue on the chest to five or six cun, and the illness would invariably be cured.

These depths are as recorded in the histories. Four fen was roughly the standard for shallow needling at the time; one or two cun, five or six cun, sound to modern ears like an immediate safety concern. This chapter will neither present them as an already-validated standard for needle depth, nor delete them from the biography simply because the numbers are alarming. It shows only one thing: someone under Hua Tuo’s tutelage pushed the needle to depths his contemporaries dared not attempt, and the histories record recovery as the outcome. The real anatomical risk, whether it was exaggerated, or whether some other angle of insertion was involved — none of this can be reconstructed from these few lines today.

7. What This Chapter Can Actually Confirm

Pulling Hua Tuo out of the image of “miracle doctor and father of surgery,” a few harder facts remain.

The same headache and fever — one patient made to sweat, the other purged.

When needles and drugs could not reach, the histories say he would open the abdomen; Pei Songzhi’s commentary also preserves a story of a “half-rotted spleen” treated by abdominal surgery.

Head wind could be eased, but perhaps not rooted out entirely.

A person just recovered from illness might still be unable to withstand the wine, labor, and sex that would ordinarily be tolerable.

In health, meanwhile: “the body wants exercise, but should not be pushed to its limit.”

Put these five things together, and a phrase emerges that will run through the whole book:

Capacity to endure.

Perhaps what the ancients were continually observing was never only “what is this illness,” but also: what can this particular body withstand right now? Can it be made to sweat? Can it be purged? Can it tolerate wine? Can it tolerate sex? Can it tolerate labor? Can it tolerate surgery?

The gaps that must be left standing are equally clear. The composition of boil-numbing powder is unknown; “as though drunk or dead” does not establish that modern general anesthesia had already been achieved. The abdominal-surgery accounts are split between the main text and a quoted commentary, and lack a series of individually verifiable cases like the diagnostic records. The skull-splitting scene in Romance of the Three Kingdoms is not historical material. Wu Pu’s longevity cannot prove a causal effect for the Five Animal Frolics. Yan Xin and Dun Zixian are prognostic narratives within a biography, and cannot be written up as causes of death already validated by modern toxicology or sexual medicine.

So the answer to Chapter Five is not “Hua Tuo had already achieved modern surgery.”

The answer is:

Ancient physicians turned the point where needles and drugs could go no further into a boundary that could be crossed by drinking a preparation and then being cut open; at the same time, they kept asking the same question — what can this body withstand right now? Hua Tuo went further, in the record, than anyone else. Where the real technical boundary actually lay is, ironically, harder to measure today, because that scroll was burned.

Bian Que saw illness moving through its stages.

Cang Gong demanded that judgment answer to outcome.

Zhang Zhongjing, facing mass death, refused to ask only what the disease was called.

Hua Tuo pushed the point where needles and drugs fell short all the way to anesthesia and incision — and placed wine, sex, and exertion back within the limits of what convalescence could bear.

In the next chapter, the question moves from the operating table back to how a person eats, sleeps, moves, and lives to old age. Sun Simiao does not ask “can this still be cut open” — he asks:

Why would a physician first ask how this person lives?

Chapter Six: Why Did Sun Simiao Ask First How a Person Lives?

—Diet, daily routine, and emotion enter the same picture as disease for the first time

Hua Tuo had asked: what can this body withstand right now? Can it be made to sweat, can it be purged, can it tolerate wine, can it tolerate sex, can it tolerate labor, can it be opened up? He had also told his student Wu Pu: the body wants exercise, but should not be pushed to its limit; a hinge that turns often does not rot.

Sun Simiao pushed the question one step further back.

Before ever reaching the point of prescribing, needling, or opening the abdomen, he asked first: what does this person ordinarily eat? How do they sleep? Do they move to excess? Do they anger too easily? How much do they drink? Have they abstained from sex?

He did not treat daily life as a decoration on top of illness. He wrote it as the very first layer of treatment.

The “Dietary Therapy” chapter of the Essential Prescriptions Worth a Thousand Gold (Qianjin Yaofang) contains an unusually firm statement:

“A physician must first thoroughly understand the origin of the illness, know what has caused it, and treat it with diet; if dietary treatment does not cure it, only then prescribe medicine.”

In plain language: a physician must first see clearly where the illness comes from, and treat it first with diet; if dietary treatment fails, only then turn to medicine.

The nature of medicine is fierce, like the use of troops. Troops are violent; they must not be deployed carelessly.

Bian Que saw illness moving through its stages. Cang Gong made judgment answerable to outcome. Zhang Zhongjing refused to ask only the disease’s name. Hua Tuo pushed the point where needles and drugs fell short to incision, and handed Wu Pu the principle of moving without going to extremes. With Sun Simiao, an even larger picture appears: diet, daily routine, emotional state, labor, and sexual activity are placed into the same medical record as decoctions and acupuncture.

1. Human Life Is of the Utmost Weight, More Precious Than a Thousand Pieces of Gold

Sun Simiao was a native of Huayuan, in the Jingzhao region. Both the Old and New Books of Tang give him a biography, though the details do not fully agree, and even his birth year is disputed. This chapter will not build its case on “he lived past a hundred.” What can be more firmly grasped is the name he gave his own book, and the attitude he wrote into its opening.

He said: human life is of the utmost weight, more precious than a thousand pieces of gold; a single prescription that relieves it carries a virtue greater than that. Hence the book was titled Qianjin (“A Thousand Gold Pieces”). The Essential Prescriptions Worth a Thousand Gold in Times of Emergency was compiled around the Yonghui era, and was later followed by the Supplementary Prescriptions Worth a Thousand Gold. The books cover the organs, acupuncture and moxibustion, pulse patterns, as well as dietary therapy, cultivating one’s nature, and emergency preparedness. Women’s conditions are placed first, followed by those of infants and children. This is no longer a physician dealing only with the transmission of cold-damage disease — it is someone who folds an entire human life, from birth through diet and emotion to old age, into the scope of medicine.

Lu Zhaolin once asked him: by what way does a famous physician cure illness? Sun Simiao first spoke of the correspondence between heaven and man, then said:

“One’s courage should be great, yet one’s caution should be small; one’s wisdom should be flexible, yet one’s conduct should be upright.”

In plain language: courage should be great, caution should be small; wisdom should turn freely, conduct should be square and steady. To act as though standing at the edge of a deep abyss or walking on thin ice — that is caution. To act with the boldness of a valiant warrior — that is courage. To act the moment a sign appears — that is flexible wisdom. To not be swayed by profit, nor troubled in conscience over righteousness — that is upright conduct.

This can be read alongside Zhang Zhongjing’s criticism of “facing the patient only briefly before the decoction is already prescribed.” Boldness does not mean prescribing medicine after a brief glance. Caution means first taking in fully how this person has lived up to this day.

The essay “On the Absolute Sincerity of the Great Physician” turns this into professional discipline: a physician should first raise a heart of great compassion and empathy; should not chatter, joke, or make noise; should not rely on their own skill to extort money or goods. These are lines from a text on medical ethics, not from a clinical trial. This chapter takes from it only the point relevant to the whole book: the physician faces a complete person, not a disease name waiting for a prescription to be pasted onto it.

2. Food First, Medicine Second — Not Just a Slogan for Wellness

The dietary-therapy chapter opens almost as though ranking physicians by priority:

The foundation of staying alive must rely on food; the speed of curing illness must rely on medicine. Those who do not know what foods are suitable cannot preserve life; those who do not understand the prohibitions on medicine cannot remove illness. Food can expel pathogenic influences and settle the organs, lift the spirit and clear the mind, and nourish the blood and qi. If illness can be leveled with food, and the emotions released to dispel illness, this may be called skilled practice.

In plain language: to stay alive, one must first eat correctly; to push back the course of illness, medicine is usually needed. Without understanding what is suitable to eat, one cannot preserve life; without understanding the prohibitions of medicine, one cannot remove illness. Food can expel pathogenic influences and settle the internal organs; if illness can be leveled and the emotions eased through diet, that counts as true skill.

He also cited what he took to be Zhang Zhongjing’s intent: when the body is balanced, one need only nurture and care for it well, and not take medicine carelessly. Medicine’s effect always leans in some direction, and can unbalance the organs’ qi, making one more vulnerable to external pathogens. While the body is still reasonably balanced, the first priority is care and maintenance, not casual medication. Medicine will always push some force out of balance, which may leave the organs’ qi unsteady and more susceptible to outside harm.

When a ruler or parent is ill, the first order should be to treat it with food; if dietary therapy fails to cure it, only then order medicine. This turns “ask first how a person lives” into a sequence, not into “medicine is no longer needed at all.” Emergency treatments, poisons, and formulas for urgent crises all still have their place in the Qianjin. Food before medicine is a matter of priority, not the abolition of medicine.

The elderly are singled out for special attention. Their intestines and stomach are thin; mixed foods disturb the five flavors against one another. Greed for flavor causing overeating leads to indigestion and shortness of breath. From the summer solstice to before the autumn equinox, be cautious with fatty, greasy foods and animal fat. Taking too much cold exposure and cold food and drink in youth, during spring and summer, leads to frequent illness in old age. Raw sliced fish, raw vegetables, and raw meat are, for the most part, harmful to people, and should regularly be avoided.

What Sun Simiao Saw, and What Can Be Checked Today

The Qianjin states: raw sliced fish, raw vegetables, and raw meat are, for the most part, harmful to people, and should regularly be avoided. “Raw sliced fish” refers to finely cut raw fish. This is not an isolated prejudice. Cang Gong and Hua Tuo had already written wine, sex, and exhaustion into certain states as dangerous burdens; Sun Simiao placed “raw, cold, and fishy” foods into everyday dietary therapy.

What can be independently checked by modern standards falls mainly into this layer:

Raw meat, raw poultry, raw eggs, raw milk: salmonella, campylobacter, E. coli, listeria, and other pathogens are more commonly found here. The U.S. Centers for Disease Control and Prevention lists raw or undercooked meat, poultry, seafood, and eggs as higher-risk foods; cooking thoroughly and confirming internal temperature with a thermometer is the safer choice.

Raw fish, sashimi, and the raw fish in sushi: there are two clear risks. One is parasites, particularly Anisakis. After a person swallows a live larva, severe abdominal pain, nausea, and vomiting can appear within hours, as the larva attempts to burrow into the wall of the stomach or intestine. Because of its raw-fish diet, Japan is among the countries with the most reported cases in the literature.

The second risk is bacteria, such as Vibrio parahaemolyticus, which is especially prominent in raw oysters and undercooked seafood. Freezing can kill many parasites (a common standard requires the core of the fish to reach roughly minus 20°C and be held there for a sufficient time, though standards vary slightly by country), but freezing is not the same as sterility, and does not eliminate all allergens. The risk at a properly regulated establishment is lower than eating fish raw at random straight off the boat; a lower risk is not the same as zero risk. For pregnant women, the elderly, and the immunocompromised, public-health guidance generally recommends avoiding raw seafood altogether.

Raw vegetables and raw sprouts: leafy greens and bean sprouts that are unwashed, or contaminated by manure or polluted water, are not an uncommon source of norovirus, pathogenic E. coli, and shigella outbreaks. Washing and cooking reduce the risk; more fundamentally, from the perspective of Chinese medicine, most vegetables are of a cooling nature, while the stomach prefers warm food — the cold, cooling nature of raw vegetables tends, in this view, to do the body more harm than good.

3. Cultivating One’s Nature: The Illness Has Not Yet Arrived, But Life Is Already Writing the Medical Record

The Qianjin Yaofang devotes a dedicated section to “cultivating one’s nature” (yangxing). Sun Simiao says: those who cultivate their nature do not rely only on taking medicine or ingesting mist-like elixirs — it extends to all hundred kinds of conduct. If moral conduct is insufficient, even jade elixirs and golden pills cannot extend life. Those who are skilled at cultivating their nature treat the illness that has not yet become illness.

In plain language: nurturing life is not only about taking medicine or ingesting supplements; everyday conduct counts too. Insufficient virtue means even golden elixirs cannot extend one’s years. Those skilled at nurturing life begin treatment before the illness has taken form. This can be set against the hierarchy of Bian Que’s three brothers in Chapter One: the highest is treating what has not yet taken form, next is the faint and hair-thin stage, and only after that comes bloodletting and strong drugs. Sun Simiao turned “not yet taken form” into an actionable daily routine.

He listed the “twelve fewer”: think less, worry less, desire less, undertake less, speak less, laugh less, grieve less, delight less, rejoice less, anger less, favor less, and hate less. Excessive thinking wears out the spirit; excessive worry scatters one’s resolve; excessive desire clouds the will; excessive undertaking exhausts the body; excessive speech depletes the qi. He also wrote: sitting too long harms the flesh, walking too long harms the sinews; do not force oneself to eat, do not force oneself to drink, do not force oneself to lift heavy things, do not worry excessively, do not become greatly angry, do not grieve excessively, do not become greatly fearful. When eating, one should first set aside vexation. After eating hot food and sweating, do not expose oneself to wind. Rinse the mouth after eating. While taking medicine, one should not strain the mind, exert great effort, or engage in sex or strong emotion.

Hua Tuo had told Wu Pu: move, but do not move to the limit. Sun Simiao broke “the limit” apart in detail: the limit of eating, the limit of drinking, the limit of lifting heavy things, the limit of anger, the limit of speech, the limit of sitting and walking. The capacity to endure was no longer confined to the bedside — it appeared in every single day.

When Lu Zhaolin asked about the essentials of cultivating one’s nature, Sun Simiao answered: know first how to be cautious with yourself, and always take worry and caution as the foundation. This is not meant to make people fearful, but to say: there has never been a case of someone surviving danger without being cautious with themselves. This runs in the same direction as Cang Gong writing “time and again I have been wrong,” Zhang Zhongjing writing of “peering through a tube,” and Hua Tuo writing “close to incurable” — an acknowledgment of limits.

4. Several Things on One Chart — Don’t Rush to Paint Them as Modern Departments

Pulling Chapter Six out of the frame of “a Tang-dynasty encyclopedia of wellness,” what is genuinely new here is not simply another batch of recipes, but a change in the way things are classified.

What Bian Que saw was illness changing its layer over time.

What Cang Gong saw was that judgment must wait upon outcome.

What Zhang Zhongjing saw was that illnesses of the same name could involve different states.

What Hua Tuo saw was the surgical boundary at the point where needles and drugs fell short, as well as the limits on what wine, exertion, and sex could bear after illness; he also had Wu Pu turn exercise into an everyday practice.

What Sun Simiao saw was this: these states are, more often than not, already written by diet, daily routine, and emotion before any medicine is ever taken.

And so a wider picture emerges in medicine:

Before illness: how one eats, sleeps, moves, becomes angry, and engages in sexual activity.

During illness: the current balance of cold and heat, deficiency and excess, and whether sweating, purging, needling, or medicine is appropriate.

In emergencies: formulas for urgent crises and toxic substances, not to be deployed carelessly.

After illness: still weak and not yet recovered, one should not undertake exhausting activity.

What can be confirmed today is this: sleep, diet, activity, emotion, alcohol, and the burden placed on the body during recovery all genuinely alter physiology. Modern medicine asks about exactly this kind of history as well. Adjusting one’s life first, and only then deciding whether medicine is needed, is not a piece of common sense unique to Chinese medicine either.

What cannot be confirmed today is this: that the correspondences between the five organs and the five flavors, or between particular fruits and meats and “benefiting the liver” or “benefiting the heart,” are already equivalent to modern nutrients or metabolic pathways. That is the ancients’ own classificatory language, which can be tested later — this chapter draws no conclusion on it.

Nor should Sun Simiao be recast as belonging to some “lifestyle school” that opposed surgery and decoctions. Acupuncture and moxibustion, cold-damage disease, abscesses, and emergency treatment all still appear in the Qianjin. What he opposed was this: dispensing medicine before the person has been fully seen.

5. What This Chapter Can Actually Confirm

First, Sun Simiao made dietary therapy the first layer in the sequence of treatment: first understand the origin of the illness and treat it with food; if dietary treatment fails, only then order medicine. Medicine was compared to troops, not to be deployed carelessly.

Second, cultivating one’s nature was written as “treating the illness that has not yet become illness.” The twelve “fewers,” not forcing wine, not becoming greatly angry, and setting aside vexation before eating, expand the observations Cang Gong and Hua Tuo had already made about wine, sex, and exhaustion into everyday rules. What Hua Tuo told Wu Pu — “not to the point of extremity” — is here broken down into limits for every single day.

Third, his requirement of physicians was great courage paired with great caution. Boldness meant daring to act once the moment called for it; caution meant proceeding as though at the edge of an abyss, only after first seeing fully how this person actually lives.

The gaps that must be left standing are equally clear. Sun Simiao’s birth year and lifespan are inconsistent across the histories. “Those who understand this may attain one or two hundred years” is a statement about cultivating life, not a demographic statistic. The dietary-therapy entries mix genuine experience, the correspondences of the Five Phases, and the dietary structure of the time, and cannot be translated wholesale into a modern dietary guideline. “On the Absolute Sincerity of the Great Physician” is an ethical text, and cannot substitute for evidence of efficacy.

Part One can rest here.

When physicians had only their own eyes, hands, and long practice of asking questions, they had, one after another, come to see:

That illness deepens over time.

That a body still as death need not mean death has already occurred.

That judgment must be written down, and made to answer to outcome.

That illnesses of the same name can involve entirely different states.

That where needles and drugs fell short, the record shows anesthesia and incision appearing; that wine and sex after illness can exceed what the body can bear; that the body should move, but never to its limit.

And finally, that life itself is already a medical record for an illness not yet begun.

The next question is no longer another story about a famous physician. After watching patients for hundreds of years, what map of the body did they ultimately draw? The meridians, qi and blood, yin and yang, the Five Phases, and the correspondence between heaven and man will now emerge, one by one, from these observations.

Part Two must ask:

The invisible path the ancients drew on the body — how can it be re-measured today?

Chapter Seven: Eleven Pathways Not Yet Closed Into a Loop

—What did the ancients see before the meridians were drawn as a circulating loop of twelve?

Part One was about people: Bian Que, Cang Gong, Zhang Zhongjing, Hua Tuo, Sun Simiao. They examined patients, wrote case records, faced death, decided whether sweating or purging or incision was appropriate, and asked how a person ordinarily eats and moves.

Part Two asks a different question. After watching for so long, what did the map they eventually drew on the body actually look like at first?

We will not begin by laying “the twelve meridians, circulating without end” before the reader. That is a later map, already tidied into neat order. The earlier physical evidence lies buried in the earth.

In 1973, Han-dynasty Tomb No. 3 at Mawangdui, in Changsha, was opened. Its occupant was buried around 168 BCE. The tomb contained medical texts written on silk. Two of these were later titled by editors The Moxibustion Classic of the Eleven Foot and Arm Vessels and The Moxibustion Classic of the Eleven Yin-Yang Vessels. A Han tomb at Zhangjiashan, in Hubei, later yielded a similar text called the Vessel Book (Maishu).

These texts were buried earlier than many of the medical classics that survive through continuous transmission. They contain no twelve meridians, no Hand Reverting-Yin Pericardium Meridian, and none of the later phrase “yin and yang threading through each other, circulating without end.”

What they record first is this: eleven vessels. Running upward from the limbs. Which segment a given vessel traverses; what suffering appears when it falls ill; that this vessel should be treated with moxibustion.

1. First They Saw a Path — Not Yet a Network

The Moxibustion Classic of the Eleven Foot and Arm Vessels organizes its vessels by leg and arm: six in the leg, five in the arm, eleven in total. Their names are Foot Greater Yang, Foot Lesser Yang, Foot Yang Brightness, Foot Lesser Yin, Foot Greater Yin, Foot Reverting Yin, and Arm Greater Yin, Arm Lesser Yin, Arm Greater Yang, Arm Lesser Yang, Arm Yang Brightness. There is no later-style naming after organs, like “Lung Meridian” or “Stomach Meridian.”

Even more notable is their direction. These eleven vessels, for the most part, run from the extremities of the limbs toward the trunk or the head and face — that is, centripetally. The vessels do not connect to one another to form a closed loop.

The Moxibustion Classic of the Eleven Yin-Yang Vessels is likewise a set of eleven. Some names already resemble the later Greater Yang and Lesser Yang; others remain quite plain — the Shoulder Vessel, the Ear Vessel, the Tooth Vessel. Of the eleven, most still run from the limbs toward the trunk; two run in the opposite direction. None of them, either, form the kind of continuous circulation seen in later texts.

The Zhangjiashan Vessel Book can fill in characters missing from the damaged Mawangdui text. It also lists a great many disease names from head to foot before describing the course and symptomology of each vessel. Here too, the vessels remain at the stage of eleven — not a textbook of twelve meridians.

Set these excavated texts side by side with the later “Meridians” chapter of the Lingshu, and the difference is stark:

The early texts have eleven vessels; the later text adds a twelfth, the Hand Reverting Yin.

The early vessels mostly run one way, each on its own; the later text describes them as circulating without end.

The early texts rarely pair a vessel one-to-one with an organ; the later text has every meridian belong to and network with a particular organ.

The early texts record almost no acupuncture points; the later text gives every meridian its own points.

The early treatment is simply “moxa this vessel”; the later system grows to include needling, moxibustion, points, divergent meridians, connecting vessels, and cutaneous regions all together.

This chapter does not intend this difference as an award citation reading “the early version was backward, the later version was progress.” It shows something more important to the whole book:

The meridians did not appear from the outset as a complete theory. What was written down first were pathways on the body that could be traced one by one, and the pains that appeared along each pathway.

2. What Were They Actually Describing?

Let us not rush to answer “is a vessel a blood vessel, a nerve, or fascia.” The excavated texts themselves are written far more plainly than that.

For each vessel, there are typically three statements: where it starts, where it passes, where it ends; what appears when it falls ill; and that this category of illness should be treated by moxa on this vessel.

For example, the arm vessel that reaches the heart lists heart pain and heart-vexation among its symptoms. The tooth vessel, reaching the teeth and running beside the nose, lists toothache among its symptoms. The Shoulder Vessel and Ear Vessel are named directly for the body part they involve. Vessels of the Foot Greater Yang type, running up alongside the spine to the head, list headache, neck pain, back pain, and lower-back pain among their symptoms.

This closely resembles what the physicians in Part One had already been doing — only the object has shifted from “this particular patient” to “this particular pathway on the body.” Cang Gong observed complexion; Hua Tuo listened for the patient to report where the needling sensation had traveled; Zhang Zhongjing asked whether there was sweating or not. The Mawangdui vessel texts instead say: pain in these locations can generally be treated by moxa along this particular vessel.

The later summary phrase “wherever a meridian passes, its therapeutic reach extends” already exists in embryonic form in the eleven-vessel texts: wherever the path passes is often also where the illness is recorded, and where the treatment is directed.

What can be confirmed today is this: before the Western Han, physicians had already come to understand the body in terms of a number of longitudinal pathways, and had written these pathways down together with a set of symptoms and a method of moxibustion.

What cannot be confirmed today is this: whether these pathways correspond to any single continuous anatomical conduit; whether a line connecting points of pain is equivalent to some objectively existing “energy channel”; and whether the number eleven reflects the result of observation, or whether the counting conventions of the time played a role in how the material was organized.

The excavated texts draw almost no points at all. This detail matters. If the earliest maps do not yet carry a dense set of named acupuncture points, then what was seen earliest may not have been a series of individual points at all, but rather a band of pain, heat, needling sensation, or symptomatic response that could be traced along a path. The points may have been stops marked in later on the route. This reading is, for now, only a working hypothesis drawn from the texts, not an already-established history of formation.

3. What Happened Between Eleven Vessels and Twelve?

The “Meridians” chapter of the Lingshu writes the vessels as twelve, adding the Hand Reverting Yin, having them thread together through yin and yang and circulate without end, with each meridian belonging to and networking with an organ. Yet other chapters within the same Neijing still occasionally show traces of the earlier eleven. This shows that the twelve-meridian circulatory system was not a finished product that fell from the sky all at once.

Why round the number up to twelve? Why connect them into a closed loop? Scholars offer various explanations: the theory of the organs had matured and needed pairing partners; the symmetry of yin and yang called for six yin and six yang meridians; numerological models involving “six of heaven, five of earth” played a role in the systematization. These explanations can be discussed, but this chapter will not present any one of them as the sole cause.

What is more useful for this book is to separate the layers:

The layer of observation: the body has traceable pathways; pain and illness often appear along these pathways; stimulating a point along a pathway can sometimes change the symptoms.

The layer of systematization: naming the pathways, counting them, pairing them with organs, fixing their direction, and joining them into a circulatory loop.

The layer of the full system: the later growth of acupuncture points, divergent meridians, connecting vessels, cutaneous regions, and extraordinary vessels.

The first layer is where the real question of “what did the ancients see” must be pursued. The other two layers concern how they turned what they saw into a map that could be taught. A map can be drawn ever more neatly. Neatness itself does not mean every line came from observation of the same precision.

This follows the same discipline as the chapter on Zhang Zhongjing. The name of a disease is an entry point, not a prescription. The twelve meridians are a later entry point, not the actual terrain already fully mapped in the Mawangdui era.

4. What This Chapter Can Actually Confirm

First, the vessel texts from Mawangdui and Zhangjiashan prove that, before the twelve-meridian circulatory system in the Neijing was fixed in its final form, a way of writing about eleven vessels already existed. Each vessel ran its own course, mostly from the limbs toward the head and trunk; treatment was mainly moxibustion applied to the vessel; and named acupuncture points had barely made their appearance.

Second, these texts record the course, the symptoms, and the moxibustion treatment together. The ancients had, at the very least, seen this: the body contains relatively stable longitudinal connections, and pain and illness can be classified and treated according to these connections.

Third, the shift from eleven to twelve, from separate pathways to circulating without end, from vessels rarely tied to organs to a full pairing of meridians with organs — this is a documented process of change that can be checked against the texts. It was not always this way.

The gaps that must be left standing are equally clear. The silk texts are damaged, and the names used to organize them are additions made by modern editors. Whether the eleven vessels are an “unfinished twelve meridians” is itself a retrospective framing. What the anatomical substance of these pathways actually is, this chapter does not conclude — that is a question for instruments to measure later, and the prediction must first be clearly written down: are we measuring impedance, pain threshold, the propagation of needling sensation, the course of fascia, or something else? One cannot simply point to some instrument and declare that it has proven something.

The physicians in Part One saw change occurring within a single patient’s body.

Part Two begins to see something else: an attempt to draw, as a shared map, the pathways that recurred again and again across many patients’ bodies.

The next chapter still will not begin with acupuncture-point formulas. It will first ask a more specific question:

Why does pressing on a particular hollow produce soreness, distension, pain, or heaviness? And can this sensation be rediscovered by modern pressure measurement, even without telling the measurer whether the spot is a recognized “point”?

[Editorial note: the original Chinese manuscript includes here a set of image-sourcing notes for museum photographs of the Mawangdui silk manuscripts and the Zhangjiashan bamboo strips — captions clarifying which images are original excavated artifacts versus later illustrative reconstructions, along with source URLs for eventual permission requests to the Hunan Provincial Museum, the Jingzhou Museum, or the Cultural Relics Publishing House. These picture-research notes are not part of the book’s argument and have been omitted from this English edition; they can be supplied separately if needed for a final print layout.]

Chapter Eight: Why Does Pressing Down Produce Soreness, Distension, Pain, and Heaviness?

—Fixed acupuncture points, “ashi” points, and trigger points turn out not to be the same kind of “point”

The previous chapter left us with a question: why does pressing on a certain hollow produce soreness, distension, pain, or heaviness? Can this sensation be rediscovered by modern pressure measurement, without knowing beforehand whether the spot is a “point” at all?

This chapter begins with two people, one in Tang-dynasty China, one in twentieth-century America. Separated by more than thirteen hundred years, living within two completely different medical traditions, both of them pressed their fingers into the bodies of their patients.

1. The Moment of Pressing Down, When the Patient Cried Out “Ah!”

Late in life, Sun Simiao wrote the Essential Prescriptions Worth a Thousand Gold, and when discussing how to select acupuncture points, he inserted a passage quite unlike any standard chart of points. He begins by saying that anyone traveling to serve as an official or simply passing through the Wu and Shu regions should regularly have two or three moxibustion sites burned on the body, and should not let the resulting sores heal too quickly, so that miasmic vapors and malarial fevers would find it harder to invade the body. The climate of Wu and Shu was damp and rich in miasma, and moxibustion was already a common local practice. He then writes:

“There is a method called 'ashi.' When a person has pain, have them press with a finger nearby. If the pressed spot corresponds truly to the pain, the patient will feel immediate relief, or the pain will noticeably intensify, and the patient will exclaim, 'Ah, it is here’ — regardless of whether the spot is a named point, it may be treated there with moxa or needle, and it often works. Hence such places are called 'ashi points.'”

In plain language: there is a method of point-selection called “ashi.” If a person has some pain, have them press nearby with a finger. When the pressed spot truly corresponds to the pain, the patient will immediately feel relief, or the pain will clearly intensify — at which point the patient exclaims “Ah, it’s here” — and regardless of whether this is an already-named point, moxa or needle can be applied there, often with effect. Hence this category of place came to be called the “ashi point.”

A few things in this passage are worth pausing over.

First, Sun Simiao never claimed to have invented the ashi point. What he describes is a method of moxibustion already in circulation in the Wu and Shu regions; he simply recorded an existing practice and gave it a name. Many later books attribute the “discovery” of the ashi point entirely to Sun Simiao himself, even fabricating a scene in which he treats a particular patient’s leg ailment and the patient cries out “Ah, it’s here.” Such stories circulate widely, but this chapter does not treat them as historical fact — the original text of the Qianjin Yaofang states only that this was an existing practice in the Wu-Shu region, with no name or scene attached to any specific patient. The story can explain why the term “ashi” is used the way it is, but it should not be taken as a documentary record of Sun Simiao’s own clinical discovery.

Second, and more important: the ashi point follows a logic entirely different from that of fixed acupuncture points. The early eleven-vessel texts emphasized above all the path of the “vessel,” at a time when a mature system of acupuncture points had not yet fully emerged; point-selection by the ashi method follows a different logic altogether — response comes first, location second. It does not ask whether this spot appears on a meridian chart, only what the patient’s response is when pressed. This is one of the rare instances, in early Chinese acupuncture literature, of a method explicitly stated in terms of “selecting points not by a map, but by the response on the spot.”

2. Why Do Fixed Points Favor Bones, Hollows, and the Spaces Between Tendons?

The ashi point is “fixed by the pain,” as the previous section made clear. But the much larger body of fixed points in traditional acupuncture follows an entirely opposite path.

Hegu lies between the first and second metacarpal bones; Yanglingquan lies in the hollow just below and in front of the head of the fibula; Kunlun lies in the hollow between the tip of the outer ankle bone and the Achilles tendon. Such descriptions recur again and again throughout acupuncture texts, and share a hard common feature: they do not confirm their location by whether pressing produces pain, but by relatively fixed anatomical landmarks — bones, joints, the spaces between tendons. The ancients also developed an entire system of measuring the body by its own proportions to locate points, later called “bone-length proportional measurement” (gudu fencun) — using bony landmarks between two points as a baseline, dividing the body into a given number of equal segments, and locating points by these segments. What this method was built to solve is precisely the problem of “how can the same point be found repeatedly across different people’s bodies?”

This runs exactly opposite to the logic of the ashi point. The ashi point asks: this time, in this person, where does it hurt? The fixed point asks: regardless of whether this person hurts today or not, where should this location be, given the reference points of bone and joint?

One is located by response, the other by anatomy. These are not two names for the same thing — they are two different logics of point selection that, from the very start, never converged.

3. Across the Atlantic, Another Physician Was Also Using Her Fingers to Find Points of Pain

Move the clock forward more than thirteen hundred years, and shift the scene to the United States.

In 1955, an internist named Janet Travell began treating a senator suffering from chronic back pain. He had injured his spine during the war, undergone two surgeries, and still suffered pain severe enough to disrupt daily life — he was later to become President John F. Kennedy. Travell’s method was not to start with imaging, but to press her fingers, inch by inch, along the patient’s muscles, searching for points that were especially tender to the touch and that would “refer” the pain elsewhere.

As early as 1942, Travell had already given such points a name: the trigger point. She observed that muscles contain palpable, taut nodules; pressing on these points produces local soreness, and often “pulls” the sensation of pain to another part of the body entirely — pressing the shoulder, and the pain shoots up into the head; pressing the calf, and the pain shoots down into the heel. This phenomenon of “press here, pain there” later came to be called “referred pain.”

In 1961, when Kennedy became President, Travell became the White House physician — the first woman in American history to serve as personal physician to a sitting president. She later co-authored, with David Simons, Myofascial Pain and Dysfunction: The Trigger Point Manual, published in 1983, which mapped out, muscle by muscle, the trigger points across nearly the entire body and the pattern of referred pain each one produced.

Sun Simiao pressed to find the “ashi.” Travell pressed to find the “trigger point.” Separated by thirteen hundred years, one in China, one in the United States, they were nonetheless using the same logic: locating not by skeletal landmarks, but by the muscle’s response in the moment — wherever the tissue is taut, wherever pressing produces unusual sensitivity, that is where the point lies, and the point itself will shift as the state of that muscle changes.

At this stage, three distinct kinds of “point” have appeared on the body: the fixed point, located by skeletal landmark; the ashi point, located by the immediate pathological response; the trigger point, located by the current state of the muscle. The next section must ask: if these three kinds of point were never the same category of thing to begin with, then what exactly went wrong in that comparison Melzack made more than forty years ago?

4. Three Kinds of Point, Not One Kind of Thing

The previous section placed all three kinds of point side by side:

Fixed meridian points — located by skeletal landmarks, joints, and the spaces between tendons; relatively fixed in position; typically located using bone-proportional measurement, the space between two bones, the space between two tendons, or the hollow of a joint.

Ashi points — located wherever there is a clear pathological response; not fixed in position, shifting with the course of the illness; confirmed by the response to pressure.

Trigger points — located by palpating muscle and fascia for sensitive nodules; not fixed in position, shifting with the state of the muscle; presenting as taut bands, local tenderness, and referred pain.

In 1977, the psychologist Ronald Melzack and two colleagues, publishing a comparative study in the journal Pain, used mainly the fixed points of the fourteen meridians — not ashi points — as the basis for comparison with trigger points. They reported that, using a matching criterion of within 3 centimeters, trigger points corresponded to acupuncture-point locations almost entirely; requiring that the treated area of pain also match, the correspondence rate was around 71%.

In 2003, Stephen Birch re-examined this study. He raised two objections: first, that a matching standard of “within 3 centimeters” was far too loose; and second, and more fundamentally — conceptually, trigger points should have been compared against ashi points, not the fixed points of the fourteen meridians. The logic underlying a fixed point’s location is skeletal landmark; the logic underlying a trigger point’s location is the state of the muscle. The two follow different locating principles, and forcing them into comparison was bound to inflate the apparent rate of correspondence. Recalculating with a stricter, category-matched standard, Birch estimated the true correspondence between trigger points and acupuncture points, in terms of clinical treatment area, at only 18% to 19%.

The value of this forty-year dispute lies not in whether 71% or 18% comes closer to the truth, but in what it exposes about an even earlier problem: before asking “how much do these two points overlap,” one must first ask whether they are even the same category of point to begin with.

Fixed points are located by skeleton; ashi points and trigger points are both located by response — these latter two are more likely to be close relatives. The line of fixed points needs to be tested separately, by another method entirely: not by comparing “does it hurt or not,” but by comparing whether a specific coordinate near a skeletal landmark shows a reproducible structural or functional difference from the non-point tissue beside it.

5. If We Wanted a Serious Test, How Should It Be Designed?

Three kinds of point require two different kinds of experiment.

Testing ashi points and trigger points: have a practitioner of Chinese medicine and a physical therapist independently palpate the same group of pain patients, each blind to the other’s judgment, and see how much overlap there is between the sensitive points each side identifies. What this step measures is whether two independently trained senses of touch point to the same set of response points on the body.

Testing fixed points: rather than asking “does this hurt,” fix in advance a set of measurable indicators — pain threshold, skin resistance, local microcirculation, tissue-structure imaging — and run a blinded comparison between the point coordinates fixed by skeletal landmarks and the non-point tissue a short distance away. Even if none of the indicators shows a stable difference, that too is a result that must be honestly reported, and cannot be omitted simply because it fails to support the theory.

Neither of these two steps has yet reached the rigor this book calls for — writing down the prediction before turning on the instrument — but the direction is already far clearer than simply overlaying two maps and counting the overlap.

6. Without Knowing Whether It Is a “Point,” Can an Instrument Still Find It?

The question left at the end of Chapter Seven can now be asked more precisely: if neither the person doing the measuring nor the person being measured is told whether a given location is a traditionally recognized point, can modern pressure measurement independently pick it out?

A pain-pressure algometer can answer, quite objectively, a simple question: as pressure is gradually increased, does one location on the body begin to hurt at a different pressure than another? The resulting value is called the pain-pressure threshold.

For myofascial trigger points, this method has already been used extensively, and can demonstrate that certain pathologically sensitive regions have a lower pain-pressure threshold than the surrounding tissue. This much is a phenomenon that can be independently verified by instrument, and one for which considerable supporting evidence has already accumulated.

But if the question is changed to “are traditional fixed points stably more sensitive than the non-point tissue beside them,” the answer becomes far less clear. A systematic review in 2024 examined exactly this question and, in the end, found only 11 qualifying studies in human subjects — and a substantial portion of these did not even include an adjacent non-point control. The review’s authors were cautious in their conclusion: the current evidence is neither sufficient to support nor to refute the proposition that “human acupuncture points show a stable sensitization phenomenon under disease states.”

It is worth separating two things clearly here: the sensitivity of myofascial trigger points, and whether the fixed points recorded in ancient texts are inherently more sensitive, are two questions with entirely different strengths of evidence — one cannot, simply because there is more evidence for the former, count the latter as “already partly supported” as well.

So the more honest statement today is this: instruments can already measure “where is more sensitive,” particularly along the line of myofascial trigger points; but they have not yet answered a separate question — whether the fixed points the ancients spoke of are a category of location with a stable, distinctive physical property of their own. This is exactly why the dispute between Melzack and Birch has still not been simply resolved, more than forty years on.

7. What This Chapter Can Actually Confirm

First, the name “ashi point” comes from the Qianjin Yaofang; what Sun Simiao recorded was a point-selection method already in circulation in the Wu-Shu region: press on the patient’s body, and wherever the patient clearly feels relief or intensified pain, apply moxa or needle there — regardless of whether it is a standard point. The core of this method is “response first, location second,” the exact reverse of the sequence by which the twelve meridians were first drawn as pathways and points added afterward.

Second, this same method of “pressing to find points of pain” reappears along an entirely independent historical line: the “trigger point” proposed by the twentieth-century American physician Janet Travell, likewise located by pressing to find sensitive nodules in the muscle, and likewise observed to produce the phenomenon of “press here, pain refers there.”

Third, at least three logically distinct kinds of “point” exist on the body: fixed points located by skeletal landmark, and ashi points and trigger points both located by the immediate pathological response. In 1977, Melzack and colleagues compared trigger points against the fixed points of the fourteen meridians and reported a 71% correspondence rate; in 2003, Birch pointed out that this comparison itself had chosen the wrong category — trigger points should be compared against ashi points — and recalculated the correspondence at only 18% to 19%. This is not merely a correction of a number; it is a reminder that before asking “how much do two maps overlap,” one must first ask whether the two maps are even depicting the same kind of thing.

Fourth, modern pain-pressure measurement can independently detect, along the line of myofascial trigger points, regions of pressure sensitivity greater than the surrounding tissue, and considerable supporting evidence has accumulated here; but when the question shifts to whether traditional fixed points are inherently more sensitive than the non-point tissue beside them, a 2024 systematic review found only 11 qualifying human studies, many lacking an adjacent non-point control, and its authors concluded that the current evidence is neither sufficient to support nor to refute this proposition.

The gaps that must be left standing are equally clear. The specific scene of “Sun Simiao selecting a point for a patient’s leg ailment, and the patient crying 'Ah, it’s here'” is a later legend, and this chapter has not accepted it as historical fact. There remains no agreed standard, in the field, for how strictly trigger points should be compared against acupuncture points. A lowered pain threshold shows that a point is “more sensitive,” but this alone cannot establish whether it is what meridian theory calls a place “where qi and blood converge” — that belongs to a further layer, and this chapter draws no conclusion on it.

What Sun Simiao found, by pressing, was “where it hurts.”

What Travell found, by pressing, was “where it hurts, and where the pain travels to.”

The two lines are placed on the same table for the first time in this chapter — considerable overlap, and considerable divergence, both written out plainly.

The next question must go one step further. Finding the point is one thing; once a needle is inserted, why does the soreness and distension travel, along some invisible path, to somewhere far away? The next chapter asks:

Once a needle is placed here, why does the sensation travel elsewhere?

Chapter Nine: Once a Needle Is Placed Here, Why Does the Sensation Travel Elsewhere?

—From “qi arriving” to “propagated sensation along the channels”: what did the ancients actually mean by “traveling”?

The previous chapter left us with this: finding the point is one thing; once a needle is inserted, why does the soreness and distension travel, along some invisible path, to somewhere far away?

This chapter must ask, honestly: how common is this, really? And when it happens, what exactly is moving inside the body?

1. “Qi Arriving, Then Effect”: The Ancients Treated It as a Pass-Fail Line

The chapter “Nine Needles and the Twelve Source Points” in the Lingshu contains a passage devoted entirely to the effect of needling:

“Needle it, and if the qi does not arrive, it does not matter how many times you needle; needle it, and once the qi arrives, withdraw the needle and needle no further... The essential point of needling is this: once qi arrives, there is effect; and this effect, once confirmed, is as unmistakable as wind scattering the clouds, as plain as suddenly seeing a clear blue sky — with this, the way of needling is complete.”

In plain language: once needled, if the qi has not yet arrived, it makes no difference how many needles are used — none of it counts; once the qi arrives, the needle should be withdrawn and needled no further. The single most important thing in needling is “qi arriving” — only once the qi has arrived is there any effect, and once this effect appears, it is as unmistakable as the wind blowing the clouds away and the sky suddenly turning clear. With this, the principle of needling has been fully stated.

This passage turns “qi arriving” into the pass-fail line for judging whether a session of needling has any meaning at all, rather than some optional decorative flourish. What cannot be confirmed today is exactly what layer of modern physiological activity this “qi” corresponds to — that is a question for later chapters to address directly. What can be confirmed for now is this: at least by the time the Lingshu was compiled, physicians had already made “whether some perceptible response appears in the body after needling” the decisive threshold for whether treatment had taken effect at all.

The same chapter contains another line, often quoted by later generations, worth reading alongside it here:

“At the junctions of the joints, there are three hundred and sixty-five meeting points. Grasp the essential point, and it can be stated in a single sentence; fail to grasp it, and the explanation scatters without end. What is called a 'joint’ here is where the spirit-qi travels in and out — it is not the flesh, sinew, or bone itself.”

In plain language: on the human body, the places where “joint” meets “joint” number three hundred and sixty-five in total. Grasp the essential principle, and it can be stated in one sentence; fail to grasp it, and the account will ramble on without limit. What is called a “joint” here is where spirit-qi travels in and out — it does not refer to the flesh, sinew, or bone itself.

This is not this book speaking on the ancients’ behalf — it is a reminder the author of the Lingshu wrote down himself: what he called a “joint” was, from the very beginning, never treated as an anatomical location in the sense of flesh, sinew, or bone. This does not, in turn, prove that “qi” is therefore something beyond anatomy — that remains a question requiring separate testing. But it does at least show that shrinking “qi arriving” down to “the needle hit some muscle” is reading the original text more narrowly than the text itself intended.

2. How Hua Tuo Had Patients Tell Him “It Has Arrived”

Chapter Five recorded that Hua Tuo told his student Wu Pu, “the body wants exercise, but should not be pushed to its limit.” The Records of the Three Kingdoms preserves another detail about how he needled:

“If needling was required, it was no more than one or two sites. When inserting the needle, he would say: 'the sensation should travel to such-and-such a place; tell me when it arrives.' When the patient said, 'it has arrived,' he would immediately withdraw the needle, and the illness would often improve.”

In plain language: when needling was needed, Hua Tuo would typically needle only one or two points. As he inserted the needle, he would first tell the patient: this sensation ought to travel in a certain direction, to roughly such-and-such a location — tell me once it gets there. When the patient said “it has arrived,” he would at once withdraw the needle, and the illness would often visibly improve on the spot.

This record can be read alongside the Lingshu passage quoted in the first section: one text says “qi arriving, then effect”; the other gives the concrete procedure a physician actually followed — first telling the patient which direction the sensation should travel, then waiting for the patient’s confirmation, then withdrawing the needle only once that confirmation came. This shows, at the very least, that Hua Tuo placed enormous clinical weight on where the sensation traveled after needling, and used the patient’s real-time feedback to decide when to stop. That said, viewed through the lens of modern experimental method, because the patient had already been told in advance “where it should travel,” this record cannot be taken directly as a blinded validation — the patient’s own expectation could well have shaped how they reported the direction and location of the sensation. It is a precious record of clinical practice, not a controlled experiment in the modern sense.

3. Contemporary Researchers Begin, in Earnest, to Count: How Many People Actually Experience This?

What the old texts recorded, for the most part, were events between a physician and a single patient. In the twentieth century, Chinese researchers made the first attempt to turn this into a question that could be counted. This phenomenon later came to be called “propagated sensation along the channels” (PSC) — after needling or electrically stimulating a point, some people report that a feeling of soreness, numbness, distension, or heaviness travels along a path close to the one recorded for the meridians.

In the 1970s, China organized a relatively large-scale survey of propagated sensation along the channels. Definitions and grading criteria varied between studies, and some later reviews put the rate of inducible propagated sensation somewhere between roughly 12% and 24%; only a minority showed a very clear path and a very pronounced phenomenon. This points to something important: this phenomenon is not something everyone has, nor does it necessarily appear after needling. It behaves more like a response whose strength varies enormously across the population. The survey-style studies also noted that this sensitivity showed no clear relationship to sex or ethnicity, but did show some association with age and health status.

There is one detail, noticed even earlier, worth recording separately: the Japanese scholars Nagahama Yoshio and Fujita Rokuro, who were the first to systematically report on this phenomenon in the twentieth century, had already noticed that the apparent speed at which some subjects reported “the sensation traveling along a line” was far slower than the conduction velocity of a typical peripheral nerve action potential. This discrepancy makes the simplest explanation — that it is merely an electrical impulse racing directly along a single nerve — look inadequate, though it does not, in turn, prove that the nervous system is not involved at all: central sensory integration, sustained local stimulation, changes in the autonomic nervous system, and other processes could all produce an apparent speed different from classical nerve conduction. What genuinely needs explaining is this: what combination of tissues and neural processes produces this slow, linear, subjective sense of propagation?

4. Could the Rare, Highly Sensitive Minority Simply Be People Who Have Trained?

The numbers in the previous section leave behind an uncomfortable question: if pronounced propagated sensation appears only in a small fraction of people, what does that actually mean? The survey approach implicitly assumes this phenomenon ought to be distributed roughly evenly across everyone, so that the low rate found is often read as “most people don’t have it” or “a few people just happen to be sensitive.”

This line of thinking has not gone entirely unstudied. In 1991, the Chinese Acupuncture and Moxibustion journal published an observational study of qigong-induced propagated sensation among 35 adults “well trained in qigong practice,” recording 840 meridian instances in total. This shows that the question of whether training state affects propagated sensation has, at least once, been formally raised and observed by researchers — it is not a claim invented out of nothing. But this kind of early observation still falls short of a rigorous modern population comparison — whether long-term practitioners are genuinely more likely than ordinary people to experience propagated sensation, and whether their pathways are more complete and closer to the traditional meridians, would still require indicators fixed in advance, a control group, and blinding wherever possible.

Within the tradition itself, there is an explanation worth including in this book — but the two possible readings of it must be kept separate, rather than blended together prematurely.

The first explanation, closer to the tradition’s own account: the meridians differ in how open or blocked they are. People who practice long-term meditation or qigong may gradually develop more open meridians, so that after a point is stimulated, “qi” travels further along the channel more easily, and the sensation is clearer and more complete. This explanation assumes that what changes is some genuine “state of the pathway” within the body.

The second explanation, from the angle of modern psychology and neuroscience: people who meditate or practice qigong over long periods, by paying sustained attention to internal bodily sensation year after year, may develop a heightened ability to detect subtle bodily signals. This explanation assumes that what mainly changes is a person’s capacity to perceive bodily signals, not necessarily that the body has grown an additional, more open pathway.

These two explanations are not the same thing. The first says the pathway has changed; the second says perception has changed. Both could be true; both could be false — this book currently has no evidence on which to decide between them.

It must be stated plainly here: the above are explanations from within the tradition, or from across disciplines — they are not conclusions that have already been established. Their shared value lies in the fact that both can generate clear, testable predictions, rather than an unfalsifiable stock phrase.

The Author’s Own Experience

I myself once had a rather unusual experience. A friend simply pressed once on the top of my head, and I immediately felt a distinct, hard-to-describe sensation travel all the way down from my head to my feet.

This is, of course, only a personal experience; it proves nothing about what the meridians are, and cannot substitute for any experimental data. But it left me curious about a question easily overlooked in the early propagated-sensation surveys: why do the overwhelming majority of people feel almost nothing, while a very small minority experience something this clear, and over such a long distance?

If the first explanation is correct, this kind of difference is not at all surprising; if the second explanation is what is really operating, then this small group of highly sensitive people should share some trait linked to sustained attention to the body, and not necessarily to “more open meridians.” Neither of these two explanations is, at this stage, a conclusion — each is a prediction that could be designed into an experiment to distinguish between them.

So how might these two explanations actually be told apart? The key is not simply comparing “who can feel it and who can’t,” but asking a more refined question. One could recruit three groups: long-term meditators or qigong practitioners; people with long-term physical training in acupuncture, tai chi, or qigong-like practices; and an ordinary control group with no such training. Participants would not be told in advance which group researchers expected to show more propagated sensation. All three groups would receive the same stimulation site and the same technique, and subjects, without ever seeing a meridian chart, would simply draw, on an outline of the human body, the direction, distance, speed, and extent of the sensation as it spreads.

If one only tallies “was there a sensation” or “how strong was it,” the most this can support is the second explanation — practitioners are simply more sensitive, and nothing more. What genuinely needs to be compared is not merely “who can feel it,” but whether what a person feels can be drawn, again and again, as a similar path, without knowing the answer in advance. Specifically: does the same person, stimulated repeatedly, draw a stable path? Tested again on a different day, is the path still reproducible? And how closely does this path match the traditional meridian chart?

Designed this way, four outcomes are possible: no difference at all among the three groups; practitioners are simply more sensitive, but their paths are neither more stable nor closer to the meridians; practitioners are not only more sensitive but draw paths that are more stable across different times and repetitions, and noticeably closer to the traditional meridians; or only a very small subset of people, regardless of whether they practice, show this kind of stable, clear, long-distance propagation. If the third outcome appeared under strict blinded conditions, it would be a phenomenon well worth pursuing further — and it would simultaneously support the “more open channels” layer of explanation; if it did not appear, that too should be honestly reported, not quietly shelved simply because it fails to support the hypothesis.

One further question can be pushed even earlier: since in that personal experience, what triggered the sensation was only a single press, not a needle, this itself suggests a more specific hypothesis — propagated sensation may not be something a needle itself produces, but rather something that a stimulus of some kind triggers within a pathway or perceptual process that already exists in the body. If this is true, then testing the same highly sensitive subject with pressure, needling, heat, and light mechanical stimulation, and finding that the propagation path remains fairly consistent across these different stimulus types, would be more worth pursuing than “a sensation produced by some particular needling technique.”

No one has yet carried out this entire experimental design to this level of rigor; the 1991 observation covered only the interior of a group of qigong practitioners, without a three-way comparison including a physical-training group and an ordinary control, and without specifically testing the reproducibility and stability of the path. This chapter sets this design down not as evidence already completed, but as a reminder of one thing: what is genuinely worth pursuing may not be why more than ninety percent of people show no clear propagated sensation, but rather what is actually different, inside the body, about that small minority whose sensation is clear and whose path is stable — whether the pathway has changed, or perception has changed, or both.

5. A Scientist Once Said He Had Found the Tube

Before asking what exactly is being propagated, a historical episode must be included here, because it is the most famous — and most easily oversimplified and misreported — case study in this area.

In 1962, Kim Bong-han, a professor at Pyongyang Medical University in North Korea, published a report claiming he had found the anatomical substrate of the meridians. He named this structure the “Bonghan corpuscle” and “Bonghan duct,” asserting that acupuncture points corresponded to small, node-like corpuscles beneath the skin, and that meridians corresponded to tubular structures connecting these corpuscles, through which flowed a fluid containing DNA particles, spread throughout the entire body and extending even into blood vessels and lymphatic vessels. This was the first time in the history of modern science that anyone had explicitly claimed: the meridians are not a metaphor — they are a concrete duct system, and it has already been found.

Kim’s claim did not smoothly pass the most critical test of the time: can others, following a publicly available method, reliably find the same thing? Part of the problem was that he did not adequately disclose the key experimental methods needed to identify these structures. Between 1963 and 1965, researchers from multiple countries, including institutions in China, attempted to replicate the finding, with inconsistent results — Chinese researchers, following his description, searched for similar structures in rabbits and other animals, and obtained mostly tissue sections resembling the umbilical cord or ordinary connective tissue, failing to stably reproduce the kind of independent, systemic duct network Kim had reported. Around 1965, Kim’s research institute abruptly stopped publishing, no new reports ever followed, and his own subsequent fate was never publicly explained.

The matter lay dormant for more than thirty years. Around 2002, a team at Seoul National University in South Korea revived this line of research, later renaming the relevant structures the “Primo Vascular System.” Since then, a series of small tubular and nodular structures have been reported on the surfaces of animal organs, within lymphatic vessels, and within blood vessels, with some results reproduced by subsequent teams. But a great many of the key claims remain unconfirmed independently and stably — in particular, the part most directly relevant to acupuncture theory, namely whether these subcutaneous structures reliably sit at the locations of traditional acupuncture points and meridians, remains, to this day, a technically difficult and unresolved question.

So Kim Bong-han’s story is neither “the anatomical structure of the meridians has been falsified” nor “the anatomical structure of the meridians is about to be confirmed.” The more accurate statement is: he proposed a startling anatomical claim, but insufficient disclosure of method meant that independent replication mostly failed at the time; decades later, some researchers rediscovered structures of similar form, yet still without resolving the single most critical question — whether it is, in fact, the meridians. What this history leaves for this book is a reminder: announcing the discovery of an entirely new anatomical structure is something with an extremely high bar to clear — it must withstand the most basic form of independent replication, especially of the most central, most specific part of the original report.

6. If Not a Visible Tube, What Might Be Moving?

That Kim Bong-han’s duct system was never stably reproduced does not mean that nothing at all happens inside the body after needling. Modern research has, along several other lines, indeed recorded some reproducibly measurable changes.

Connective tissue: Helene Langevin’s team, in human and animal experiments, found that when a needle inserted under the skin is continuously rotated, the surrounding connective tissue winds around the needle shaft — the greater the angle of rotation, the tighter the winding, and the greater the force required to withdraw the needle. This offers a directly measurable mechanical phenomenon behind what acupuncturists describe as “needle grasp” or “the needle being seized by the tissue.” Researchers have further proposed that this mechanical pulling might transmit signals through connective-tissue cells, offered as one possible mechanism for the sensation of “qi arriving” — but this remains a mechanistic hypothesis, and should not be treated as equivalent to the meridians themselves.

Skin electrical properties: for decades, a number of experiments have reported that the skin impedance at certain acupuncture points, or along meridian lines, is lower than at neighboring areas, though some well-designed studies have failed to reproduce this difference. A 2008 systematic review concluded that these results are suggestive, but that the quality of the research, the measurement techniques, and confounding factors are not yet sufficient to support the conclusion that “acupuncture points or meridians possess a stable, distinctive electrical property.”

Infrared thermography: some studies report that, after needling or under certain conditions, band-like temperature variations appear on the skin surface resembling the course of the traditional meridians, but this kind of observation currently remains exploratory evidence, not yet sufficient to prove the existence of an independent “meridian heat channel.”

Nerves and local blood flow: needling activates local nerve endings, producing changes in local blood flow and electromyographic activity — this is not at all mysterious in physiological terms, and has corresponding experimental support.

It must be stated plainly, alongside all this, that these observations each stand on their own; this does not mean they have been strung together into a single, complete causal chain, still less that together they prove the “meridians” to be some anatomical structure independent of nerves, blood vessels, and connective tissue. That acupuncture can produce measurable physiological responses is one thing; that the meridians have therefore been proven to be an independent anatomical structure is another matter entirely, and a far larger one. This chapter confirms only the first; it does not let the reader leap ahead to the second.

7. What This Chapter Can Actually Confirm

First, the chapter “Nine Needles and the Twelve Source Points” in the Lingshu makes “qi arriving” the key threshold for judging whether needling has entered an effective state — no qi arriving, and no number of needles counts; qi arrived, and one should stop. Later generations often connect this with “deqi” (obtaining qi), but what “qi arriving” actually meant in the classical text cannot simply be reduced to a modern “deqi scale.”

Second, the account of Hua Tuo’s needling recorded in the Records of the Three Kingdoms preserves a specific procedure: telling the patient in advance where the sensation should travel, and withdrawing the needle only once the patient confirms “it has arrived.” This shows he placed great weight on real-time feedback about the needling sensation, but because the patient had already been told the expected direction, this record cannot be treated as a blinded validation — it can only be counted as a precious record of clinical practice.

Third, twentieth-century China organized a relatively large-scale survey of propagated sensation along the channels. Under differing definitions and grading systems, the rate of inducible propagated sensation has been summarized at roughly 12% to 24%, with only a minority showing a very clear path — this phenomenon is not something everyone has, nor does it necessarily appear after needling. The apparent speed of propagation reported by some subjects is slower than typical nerve conduction, a discrepancy that makes the simplest explanation inadequate, though it cannot be used to conclude that the nervous system is not involved at all.

Fourth, within the tradition there is also another explanation: that propagated sensation should not, by rights, be evenly distributed across the population, since the openness of the meridians and the sharpness of perception vary from person to person, and long-term practitioners may be more able to enter a state in which this kind of propagation can be detected. This explanation currently lacks a dedicated population-comparison study, and this chapter does not accept it as settled; but it does yield a clear, testable prediction — for instance, comparing practitioners, long-term physically trained individuals, and an ordinary control group, under blinded recording without a meridian chart shown in advance, to see whether the propagated path is closer to the traditional meridians.

Fifth, Kim Bong-han’s 1962 report claiming to have found the anatomical substrate of the meridians suffered from insufficient disclosure of method, causing most independent replication in the 1960s to fail; decades-later renewed research reported some structurally similar findings, but the part most directly relevant to acupuncture theory — whether subcutaneous structures reliably correspond to traditional points and meridian positions — remains unresolved to this day. This is not a simple case of falsification, nor a discovery merely awaiting confirmation, but a case with a complete public record, and one that remains genuinely unsettled.

Sixth, connective-tissue winding, differences in skin electrical properties, patterns in infrared thermography, and local nerve and blood-flow responses are all phenomena that have already been observed in modern research, though the strength of the evidence varies considerably: the mechanical phenomenon of connective-tissue winding itself is fairly solid, but treating it as the mechanism of “qi arriving” remains a hypothesis; the observations regarding skin electrical properties and infrared thermography are, according to most reviews, not yet sufficiently well-supported to establish that acupuncture points or meridians possess a distinctive physical property. These phenomena each stand on their own, and do not together prove that “the meridians” are some anatomical structure independent of the nervous, vascular, and connective-tissue systems.

The gaps that must be left standing are equally clear. The survey data on propagated sensation come from different eras, different institutions, and different statistical criteria — this chapter has given a range rather than a single precise figure. The explanation proposed from within the tradition currently has no dedicated population-comparison study to support it; the experimental design proposed in this chapter has not yet been carried out by anyone; the author’s personal experience serves only as a clue that prompted a question, not as evidence. Research on skin electrical properties and infrared thermography generally involves small samples and significant methodological variation, and this chapter does not treat them as settled. Kim Bong-han’s original samples and detailed methods can hardly be fully re-examined today; this piece of history is included mainly as a methodological lesson, not as a final verdict.

What the ancients wrote as “qi arriving” treated the body’s own response as the standard by which needling was judged to have succeeded.

The twentieth-century surveys turned “how many people actually experience this response” into a range that can be discussed.

The story of Kim Bong-han reminds us that proposing a startling anatomical claim, and having that claim withstand independent replication, are separated by a very long road.

By this point, we have moved from “line” to “point,” and back again from “point” to “line.” The sensations the ancients recorded are still ones that modern people genuinely encounter; some of the accompanying changes can indeed be measured by instruments. But whether these phenomena arise from one and the same system, we still do not know.

Next we must confront that harder word to set aside:

The ancients said “the qi has arrived.” So what, exactly, did they mean by “qi”?

(Please read Volume II)