Diarrhea That Would Not Stop for a Month, and a Five-Year-Old Who Would Not Eat? Doctor Zhang Xichun Cured This Slippery Diarrhea (Hua Xie) with Nothing but Shu Yu Zhou (Plain Chinese Yam Porridge)
What people search for: toddler diarrhea / child diarrhea for over a month / diarrhea that will not stop / a child who cannot eat / fever in a child Corresponding medical terms: childhood diarrhea · spleen-deficiency diarrhea · insufficiency of yin · slippery diarrhea (hua xie)
Opening scene: a five-year-old girl, worn down by dose after dose of cold, bitter medicine
Today we continue our series on how Doctor Zhang Xichun used Chinese yam (shanyao). Everyone knows yam — it is at once a food and a medicine, what Chinese medicine calls “medicine and food share one origin” (yao shi tong yuan). And yet Doctor Zhang Xichun used it to treat some of the most stubborn illnesses, often with remarkable results. Today’s patient was a five-year-old girl.
💬 Note from Doctor Luo: Remember this: yam is no ordinary food. In Doctor Zhang Xichun’s hands, it was a life-saving medicine. Keep reading, and you will see just how powerful a bowl of yam porridge can be.
Where did the illness come from? One autumn gust of cool wind knocked over a delicate child
The story takes place in Dadongguan, Fengtian (today’s Dadong District, Shenyang). A schoolteacher named Zheng in the area had a daughter of just five. In autumn, the child caught a chill — that cool autumn wind had blown through her. And then what? She fell ill, telling her family she “felt heat inside” (xin zhong fa re).
💬 Note from Doctor Luo: Doctor Zhang Xichun always said “felt heat inside” — what does that mean? The patient feels heat in the interior; it is a sensation of heat. At this stage the pathogen had already turned to heat (hua re), and the correct treatment was to use pungent-cool (xin liang) herbs to let the heat out and disperse it outward.
The doctor’s mistake: eleven doses of bitter-cold medicine, and the spleen and stomach were ruined
But the doctor who came did not understand this principle. He did not know that the heat should be drawn outward with pungent-cool herbs. Instead he used nothing but bitter-cold (ku han) medicines — and what are those? The intensely cooling herbs like huanglian (Coptis chinensis, goldthread) and huangbai (Phellodendron bark). His reasoning: you have heat, so I use cold herbs to fight the heat. But in truth the heat needed to be released outward — this was not the moment to press it back down with goldthread.
The result? After eleven straight doses of bitter-cold medicine, the little girl’s spleen and stomach were injured, and her digestive system began to fail.
💬 Note from Doctor Luo: Children are not like adults — their organs are delicate and tender (zang fu jiao nen). An adult’s body can often absorb a bit of medicinal overreach; a child reacts the moment the dose goes even slightly too far. So when adults reflexively load children up with heat-clearing, toxin-resolving medicines, the child’s spleen and stomach are hurt right away.
Over a month of unstoppable diarrhea, while the heat above only grew worse — the doctors all gave up
How did the injured spleen and stomach show themselves? Slippery diarrhea (da bian hua xie) — the diarrhea began. And because the medicine had been so heavy-handed, the child’s bowels kept sliding and leaking without end — a full month and more without stopping. Worse still, the heat in the upper burner (shang jiao) had not subsided at all; it had grown fiercer. One doctor came and could not cure her; another came and failed too — until finally the doctors all declined to treat her any further.
It was at this point that they sent for Doctor Zhang Xichun.
💬 Note from Doctor Luo: This is the chain reaction of mistaken treatment: an external contraction turns to heat, the right move is pungent-cool to resolve the exterior, but bitter-cold was used instead — the heat never got out, the spleen and stomach collapsed first, then came the endless slippery diarrhea while the upper-burner heat worsened, and the illness grew ever more complicated. A five-year-old child holding on through more than a month of that — surviving long enough to reach Doctor Zhang Xichun was already remarkable.
Doctor Zhang Xichun took one look: the child was hollowed out, too weak to risk much medicine at all
When Doctor Zhang Xichun arrived and saw her, he was struck by how far she had sunk: after more than a month of leaking diarrhea the child was utterly frail — the old texts would say “the form is extremely withered and weak” (xing zhuang lei ruo yi shen). The pulse was thin, faint and weak (xi wei ruo), floating at the surface and beating rapidly. As for symptoms: she felt heat inside and was indeed running a fever on the outside; she was constantly nauseated and could not eat; and she had diarrhea ten or more times, day and night.
💬 Note from Doctor Luo: Notice the contradiction: fever outside, heat felt inside — it looks like a heat pattern. But the thin, weak pulse, more than a month of slippery diarrhea, and the inability to eat all say the foundation is hollowed out. If you treated this as a heat pattern and cleared the heat, the child would be finished. The heavy medicines would not do here — the child was too delicate, and a clever, gentle way had to be found.
The breakthrough: a bowl of yam porridge — gentle, unforced, building the righteous qi so the body fights the pathogen itself
Doctor Zhang Xichun’s solution was a formula called Shu Yu Zhou (Plain Yam Porridge). What is shuyu? It is yam. How is it made? Take dried yam slices — what Doctor Zhang Xichun called “sheng huai shanyao”, the yam produced in Wen County, Jiaozuo, Henan Province — grind the dried slices into a fine powder, sift it through a sieve, the finer the better. Use one jin (about 500 g) of yam powder; each serving is seven to eight qian (about 21–24 g), up to one liang (about 30 g).
💬 Note from Doctor Luo: Huai yam is the dao-di (authentic regional) medicinal material — the finest quality comes from Wen County, Jiaozuo, Henan. When Doctor Zhang Xichun writes “sheng huai shanyao”, he means dried yam slices, not the wet, fresh yam from the vegetable market. Remember that.
How is Shu Yu Zhou cooked? The complete method, right here
The cooking method is interesting: mix the yam powder with cold water, put it in a pot on the stove, and stir continuously with chopsticks as it heats — stirring little by little — and once the water boils two or three times, the porridge is done. Who can drink it? Adults and children alike.
💬 Note from Doctor Luo: Remember this method: yam powder and cold water go into the pot together, stir as it heats, and it is ready after two or three boils. This porridge treats wheezing (asthma) and coughs, and it is especially good at stopping slippery diarrhea — that unstoppable downward leaking — as well as scanty urination (passing only small amounts each time). For every illness of withering and deficiency — the weakness caused by insufficient righteous qi — this porridge helps. This was Doctor Zhang Xichun’s ace in the hole: for patients with severe deficiency, especially with diarrhea, he would often rely on this bowl of porridge to build the spleen and stomach, secure the stool, and stop the slippery leaking.
Ten days later, cured! One bowl of porridge beat a whole pharmacy of medicine
So Doctor Zhang Xichun had the little girl drink this porridge. How? She could drink as much as she liked — they added a little sugar, making it fragrant and sweet. Four or five times a day, a few spoonfuls each time. And the result? “Xun ri quan yu” — in about ten days, the child was completely well.
💬 Note from Doctor Luo: See how Doctor Zhang Xichun treated this? He built the righteous qi and let the body fight the external pathogen itself — and the external pathogen simply resolved. Not a single heat-clearing, toxin-resolving herb. Just yam, building up the spleen and stomach, letting the body go to war on its own. This is the move that shows Doctor Zhang Xichun’s mastery at its finest.
Doctor Zhang Xichun’s warning: at the turn of autumn and summer, do not let children chase cold treats
After this case, Doctor Zhang Xichun added a special note. He said that children in the countryside, at the turn between autumn and summer — the season where summer hands over to autumn — often come down with exactly this kind of slippery diarrhea. Why? Because the weather is still hot, children drink a lot of cold water, and they are especially fond of melons and fruit. Raw and cold foods injure the spleen and stomach; once the spleen and stomach are injured, diarrhea follows — the old texts call it “slippery discharge” (hua xie), the kind that pours out and will not stop.
💬 Note from Doctor Luo: Why is this illness so hard to treat? Doctor Zhang Xichun explained it thoroughly: a child’s yin is already insufficient by nature, and endless slippery diarrhea drains the yin further; when yin is hurt, the whole body runs hot, fluids run low, thirst and dryness appear, urination becomes scanty; and then the child still wants cold things, and eating cold only hurts more. So if the treatment is wrong, the child’s constitution collapses from that point on, and no amount of adjusting can repair it. What to do? Doctor Zhang Xichun said: use yam — huai yam builds both the spleen and the kidney, clearing outward above and, below, astringing and securing, promoting urination while binding the stool — truly a fine medicine, one of his great generals. And yam is an ordinary food: made into porridge with a little white sugar, children love it, and with two servings a day it will be better within days.
Bonus one: Shu Yu Zhou versus Shu Yu Yin — what exactly is the difference?
Many friends ask: what is the difference between this Shu Yu Zhou and the Shu Yu Yin (Chinese Yam Drink) we talked about earlier — dried yam slices boiled into water? Doctor Luo Dalun has set out the difference clearly:
💬 Note from Doctor Luo: Shu Yu Yin is made by slicing dried yam and boiling it in water, then drinking the water every day — you take in its medicinal power, but you do not eat the yam itself; the spent pulp is thrown away. This suits people whose righteous qi is insufficient who need nourishment — especially in the stage of great loss of qi and life-saving rescue, where it works wonderfully. Shu Yu Zhou, by contrast, grinds the whole yam into powder and cooks it into porridge, and you eat all of the yam — this is especially good for diarrhea patients whose stool will not hold. The two are completely different: if a person’s stool is dry, eating all of the yam can make it drier still. So my usual advice: for a child with diarrhea, eat the yam porridge, yam and all; for someone whose stool is normal or even a little dry, boil dried yam slices and drink the water. One takes the yam’s medicinal power; the other grinds it to powder and porridge, adding an astringent, stool-binding action on top of the medicinal power — the uses are different.
Bonus two: yam used right is a truly good medicine
Once you understand this distinction, you know how to use yam in daily life: when to boil the dried slices into water, and when to grind them to powder and cook porridge. A child with diarrhea — cook the yam porridge, sweet as a meal. An adult with great loss of righteous qi needing rescue-style nourishment — boil the dried yam slices and drink the water. One humble yam, used in the right place, is a truly good medicine.
Well, that is all for today. Compiled from Doctor Luo Dalun’s explanation of Doctor Zhang Xichun’s case, originally from Yixue Zhongzhong Canxi Lu.
Compiled from Doctor Luo Dalun’s explanation of Doctor Zhang Xichun’s case, originally from Yixue Zhongzhong Canxi Lu (Records of Chinese Medicine with Reference to Western Medicine).