Breathing Difficulty, Can’t Catch Your Breath, Worse When Lying Down? Doctor Zhang Xichun’s Case of Sunken Chest Qi
What people search for: breathing difficulty / can’t catch your breath / panting that won’t let you lie down / suffocating when lying flat / hard to breathe lying down / shortness of breath Corresponding medical terms: sinking of the pectoral qi of the chest (xiong zhong da qi xia xian) · qi sinking with deficiency · weakness of lung qi
Opening scene: a “stuffy chest” treated all the way to the brink of death
The patient in today’s case is a young man in his twenties. He only felt unwell at first — but as he went from doctor to doctor, the illness never got better; it only got worse. In the end he was panting so badly he couldn’t lie down. All night he had to sit propped against the wall, and the moment he dozed off, his breath seemed to stop entirely.
What on earth happened in between? Let’s bring in today’s protagonist: Doctor Zhang Xichun.
💬 Note from Doctor Luo: The protagonist of this story is a patient with sunken chest qi (da qi xia xian) whom Doctor Zhang Xichun cured. Sunken chest qi is one of Doctor Zhang Xichun’s most famous theories. We’ve covered many of the causes of da qi xia xian in earlier cases; today we look at a special set of symptoms — breathing problems caused by sunken chest qi. Keep those four characters in mind and watch how the story unfolds.
Who was the patient? A young man worn out in the fields
The patient was a young man in his twenties, an ordinary laborer from a farming family. He did heavy physical work and was exhausted by his days in the fields. The result: from sheer overwork, the chest qi sank — the qi mechanism drifted downward.
💬 Note from Doctor Luo: Notice — the “great qi” (da qi) here is not the “air” in the atmosphere. It is the crucial mass of qi in the chest. Doctor Zhang Xichun held that a person has a mass of qi in the chest that governs breathing and the entire qi movement of the body, and he called it the “great qi.” Once that qi sinks, all kinds of trouble follows. As for the cause — this is the conclusion Doctor Zhang Xichun reached after curing the patient: it was exhaustion.
He said “stuffy chest,” but he really meant “can’t breathe”
What symptoms did the young man have at the time? Lazy limbs — his arms and legs felt weak and he never wanted to move; reduced appetite — his stomach was off and he couldn’t eat. And his own words: stuffy chest (xiong zhong man men).
Stuffy? That sounds like bloating, like something stuck. But Doctor Zhang Xichun said this was not stuffiness at all — it was shortness of breath, genuine difficulty breathing.
💬 Note from Doctor Luo: Why did the patient describe it that way? Doctor Zhang Xichun’s original words are wonderfully plain — “a coarse man cannot describe his illness well” (cu ren bu shan shu bing qing). Ordinary laborers have little schooling and cannot say clearly where they feel wrong; this is extremely common. And don’t just point at laborers — I’m the same myself. When I feel unwell, can I always describe it precisely? Not necessarily. So when the patient said “stuffy chest,” he actually meant shortness of breath, unable to draw a full breath.
But the earlier doctor didn’t know this. “Stuffy chest”? That means qi is blocked! Open the chest and move the qi! He prescribed qi-moving herbs like xiang fu (nutgrass rhizome), yu jin (turmeric root tuber) and mu xiang (aucklandia).
And what happened? After taking the medicine, the illness got worse — not better, worse.
Three wrong treatments, each one heavier than the last
The doctor saw it wasn’t working and switched tactics: half-tonify, half-break — building up on one side while “breaking” on the other. That “breaking” usually meant herbs that invigorate the channels and smash qi and blood. After two doses, the illness was worse again.
💬 Note from Doctor Luo: Look — the disease wasn’t cured; it grew heavier. What to do? Change doctors quickly. This is the old lesson of the medical case literature: treat in the wrong direction and every treatment makes things worse. The patient’s problem was sunken chest qi — the qi was already falling — and you give him herbs that move qi and break qi? Isn’t that pouring frost on snow?
So a third doctor was called in. His prescription was strikingly simple: three herbs — jie geng (platycodon), dang gui (angelica), and mu xiang (aucklandia) — a few qian of each, no large doses. In the formula, dang gui nourishes the blood; jie geng’s nature is to move upward; and mu xiang — well, this doctor was probably also thinking of moving qi. And the result — it worked, and quickly!
💬 Note from Doctor Luo: To be honest, this doctor himself didn’t quite know why it worked. He was still thinking in terms of opening the chest and moving qi, but the herb that actually did the work was jie geng: jie geng drives qi upward, and dang gui nourishes the blood and fortifies the upright. The qi was replenished and then carried upward, and the illness improved. A lucky accident — the right medicine by chance.
But the trouble came at the follow-up visit. The doctor couldn’t tell which herb had produced the effect. He thought, jie geng moves upward — I’ll swap in something similar — and he replaced jie geng with su geng.
What is su geng? It is the stem of purple perilla. Su geng’s nature is to move downward — it disperses and descends, the exact opposite of jie geng! Jie geng sends qi up; now the medicine sent it down. The moment he took it, the illness suddenly relapsed and immediately turned serious again.
💬 Note from Doctor Luo: One word’s difference, a world of difference in the herbs’ action. Jie geng raises, su geng lowers — the direction was reversed, and all the gains from the earlier doses were thrown away. What does this story teach us? A physician must know what every herb he prescribes is actually doing. If you prescribe in a haze, you may cure without knowing how you cured — and then one day you’ll change the wrong single herb.
From then on the young man refused to take any more medicine — the more he took, the worse he got; that was intolerable! He simply endured, putting off treatment for more than twenty days, over twenty days with no medicine at all. By the end, his condition was critical.
How critical? Doze off, and the breath stops
Just how critical was it?
He could not lie down — his breathing was so difficult that day and night he sat propped against the wall. He was exhausted, and when sleepiness became unbearable he would close his eyes for a light doze (jia mei) — and the instant he drifted off, he felt his breath stop, as if breathing had cut off entirely! His family, terrified, would shout him awake; once awake, he would gasp several quick breaths before the air seemed to connect again.
💬 Note from Doctor Luo: Imagine this state — it is dreadful. Like a frog, the moment he slept his breath nearly stopped. When he was utterly spent and lay down for a moment, he felt his belly heavy as a thousand jin — so heavy he couldn’t turn or roll over, and above all he dared not lie on his back (yang wo). Everyone, this is a very distinctive sign.
Doctor Luo Dalun says he has seen this himself: people whose qi is deficient to the extreme feel, when lying supine, as if something is pressing on their chest — every time the chest has to rise to take a breath, they feel the effort, and must struggle to keep breathing. This is the manifestation of qi deficiency with sinking.
So what was to be done? Call in Doctor Zhang Xichun.
Doctor Zhang Xichun takes the pulse: this pulse is in danger
Doctor Zhang Xichun arrived and took the pulse. What did it show? Present one moment, gone the next (zha you zha wu) — as if it were there, then not there. Of the three positions cun, guan and chi, only one could be felt, or maybe two, and it beat, then stopped, then beat again.
💬 Note from Doctor Luo: Doctor Zhang Xichun judged the illness already extremely dangerous. This was sunken chest qi. Think about it: when the great qi has sunk, the breath cannot connect, so naturally the pulse comes in broken fragments. A pulse like this — whoever holds it must be fully on guard.
The prescription: boldly use one liang of raw astragalus
Since he was certain it was sunken chest qi, what did Doctor Zhang Xichun use? He boldly used raw huang qi (astragalus), a full liang (about 30 g). Plus chai hu (bupleurum), sheng ma (cimicifuga) and shan yu rou (cornus fruit), two qian (about 6 g) each.
💬 Note from Doctor Luo: Notice — a physician of Doctor Zhang Xichun’s rank, among the very best in China of his day, was still cautious: even one liang of huang qi required him to say “boldly.” Perhaps the herbs of his time were not what they are today. Today when we use raw huang qi — when my mother had kidney disease, chronic nephritis, and I treated her myself, I used more than three liang a day, sometimes 30 grams of raw huang qi, sometimes 50 grams, on and on like that, for a full year, until the illness was completely cured. So that “boldly” of Doctor Zhang Xichun’s, measured by today’s standards, was already quite restrained.
What happened when the decoction went down? After drinking it, within a short while — the young man’s belly rumbled loudly, a long gurgling rolling through him, and he began slowly to revive. A little more time passed, and he suddenly came fully to himself, his spirit returned, and he woke up.
From then on, his breathing was normal — he could breathe easily, lie down and sleep, and turn and roll over without effort.
The follow-up: two qian trimmed to one and a half, a fineness that commands respect
Was he cured? Not yet. At the follow-up visit, Doctor Zhang Xichun took the pulse again — all six positions could now be felt, but all of them showed the sparrow-pecking sign.
💬 Note from Doctor Luo: What is the sparrow-pecking pulse (que zhuo mai)? It is one of the most critical pulses in Chinese medicine. Like a bird pecking at food: the pulse is very light, floating among flesh and sinew, but rapid and urgent in succession — because a bird pecks quickly; and irregular, three and five out of step — not a steady one-two-one-two, but fast and slow, sometimes pausing, then jumping again. Such a pulse signals the spleen qi is exhausted and the upright qi is gravely depleted. So Doctor Zhang Xichun judged that the danger was still there — treatment had to continue.
But the patient said: all my hundred ailments are gone, I’m fine — I just feel a vexing heat in the chest (xiong zhong fan re). What to do?
Doctor Zhang Xichun wrote a new prescription, and the adjustment was exquisitely fine: he cut the sheng ma and chai hu from two qian down to one and a half qian each, and added zhi mu (anemarrhena) and xuan shen (figwort root), six qian (about 18 g) each — somewhat larger doses — to clear this deficiency heat. After taking it, the pulse returned to normal.
💬 Note from Doctor Luo: See that? Two qian changed to one and a half qian — even this little bit had to be adjusted. Most of us could not be so precise. Once Doctor Zhang Xichun had diagnosed sunken chest qi, his prescribing became extremely exact, and his adjustments were very deliberate — sheng ma and chai hu lift the qi upward, but lift it too much and heat is generated, so he reduced their dose and added zhi mu and xuan shen to clear heat and nourish yin — one link threading into the next.
And at the end? Only the left guan pulse still beat a little unevenly. Doctor Zhang Xichun read this as insufficient upright qi, and changed the formula to: ye tai shen (wild codonopsis, a kind of dang shen), one liang, matched with xuan shen, tian dong (asparagus root) and mai dong (ophiopogon), three qian (about 9 g) each — all yin-nourishing herbs. After two doses, the patient was completely well.
Sunken chest qi and asthma: how do you tell them apart?
What does this case teach us? Sunken chest qi causes abnormal breathing — breathing itself breaks down. Doctor Zhang Xichun discussed this specifically: how does the panting of sunken chest qi differ from asthma?
💬 Note from Doctor Luo: What is asthma like? Mouth open, shoulders heaving — inhaling is terribly difficult, the shoulders must rise with each breath, and a loud wheezing sound is produced. The panting of sunken chest qi is different — it is hard to exhale (chu qi fei jin)! So there is no open-mouth, raised-shoulder struggle; the breath simply won’t connect, and the problem lies in expiration.
There is also a distinction in the pulse: asthma patients are usually kidney qi deficient, so the chi (lower) pulse is weak and the cun (upper) pulse strong — the qi runs upward; sunken chest qi is exactly the opposite — the upper pulse is weak because the qi runs downward, so the lower pulse is firm.
Doctor Zhang Xichun held that the great qi sits between the heart and lungs, so it most directly affects the functions of the heart and lungs. Whether breathing functions normally and whether the great qi is normal are intimately connected.
💬 Note from Doctor Luo: Most people who listen to my audio are ordinary folk, not physicians, and may never see a patient this severe. But this case teaches a general truth: sunken chest qi is often linked to abnormal breathing. Sometimes we meet patients who feel they can’t draw the breath up, that their breathing is wrong — especially at night in bed, lying flat, when every breath feels like an effort. If you encounter this, one possibility to consider is sunken chest qi (da qi xia xian) — that is the hint this case offers.
Bonus: a story of deep feeling about a single herb
So what should you do if you truly have sunken chest qi? Go see a doctor and have a formula written. Shengxian Tang (Ascending the Sunken Qi Decoction) is a very simple formula — its chief ingredient is huang qi (astragalus), with a little of the lifting herbs (chai hu, sheng ma and the like) added. If it suits you, using it is very good for restoring your upright qi — this I know from deep personal experience.
💬 Note from Doctor Luo: Very, very many people — because I read Doctor Zhang Xichun’s books constantly, I see many people who genuinely have insufficient great qi. Does the great qi threaten life? No, it doesn’t. Don’t let the word “great” frighten you. It is simply that this mass of qi in the chest is crucial, and the condition got the name “sunken great qi.” Da qi xia xian need not be that severe — for some people it is only a little bodily discomfort. Only when the sinking is severe does it produce serious illness. If we can learn to protect the upright qi of the chest, to protect the great qi — that is the original purpose of telling this case, and the purpose will have been served.
Compiled from Doctor Luo Dalun’s commentary on Doctor Zhang Xichun’s case records; the original case comes from Yixue Zhongzhong Canxi Lu (《医学衷中参西录》).