A Fever That Won’t Go Away for a Month, and a Cold Feeling in the Chest

The opening: a summer cold that dragged on for an entire month

Today we continue the clinical stories of Doctor Wang Mengying. Our patient this time is a young man named Shi Songxi, who caught an external-contraction illness in summer — in plain terms, he came down with summer-heat, caught a fever.

You would think a summer cold in Jiangnan would be nothing special. But this young gentleman’s illness dragged on for more than a month without improving — and it grew worse by the day.

💬 Note from Doctor Luo: Doctor Wang Mengying was a great master of warm-disease medicine in the Qing dynasty, and a superb clinician. The very first medical-case book I read when I began studying Chinese medicine was the Wang Mengying Medical Cases, and it had a huge influence on me. Today’s case is one of the most classic in his collection — the patient clearly had heat, yet he himself felt cold all over. The logic hidden inside is well worth understanding for ordinary people.

Who was the patient? A young man “besieged” by a roomful of famous doctors

Why did Shi Songxi’s illness drag on for a month? Because his family had called in too many doctors. Jiangnan was thick with famous physicians — one would prescribe a few doses, then another would come and prescribe a few more. Many doctors, many medicines — yet instead of getting better, the illness increased daily.

💬 Note from Doctor Luo: This is what goes wrong. When too many doctors are involved, none of them gets to see the treatment through. One used warm dispersing herbs, another nourished yin with cool blood-clearers — each had his own lineage, and every formula looked exquisite on paper. But if the medicine doesn’t match the pattern, even a fine formula is useless. In that month, the illness was simply “treated” into a mess. Only after more than a month did they finally think of calling in Doctor Wang Mengying.

How sick was he? Fever, deafness, sticky phlegm, and talking nonsense

Doctor Wang took the pulse first — right cun-guan, slippery, rapid, surging upward; the left hand wiry and rapid. Then he looked at the man, and the symptoms were alarming:

• Deafness — he could barely hear;
• Bitter taste in the mouth;
• Fever, much worse at night, more manageable during the day;
• Chest tightness, as if something diffuse was blocking it;
• Constant spitting of sticky white phlegm;
• Even drinking water felt like something stuck in his throat;
• Loose stools, and urine that was deep-colored and reddish;
• Occasionally delirium — talking nonsense.

💬 Note from Doctor Luo: Let me unpack that pulse: the right cun and guan positions were slippery, rapid, and surging upward — the right hand governs the lung and spleen; slippery means phlegm (that gurgling quality means phlegm or dampness), rapid means the pulse is fast (heat), and surging upward means qi moving upward — so the disease was in the lung, with qi rebelling upward. The left hand was wiry and rapid, taut like a zither string and beating fast — again a heat sign. Fever worse at night, deafness, bitter mouth — all classic symptoms of external-contraction heat disease. And once he was talking nonsense, you know a month of illness had truly worn him down.

Doctor Wang takes the pulse: summer-heat in the lung — one dose of White Tiger Decoction settles it

After examining him, Doctor Wang said something that stunned the whole family: the summer-heat had stayed in the lung the whole time — the heat pathogen had injured the lung but never penetrated deeper; it had not transmitted through the channels. In this situation, a single dose of White Tiger Decoction could cure it.

The illness wasn’t severe! So why had a month of treatment failed?

💬 Note from Doctor Luo: Doctor Wang knew perfectly well: the disease wasn’t severe — the medicines had all been scrambled. Herbs thrown together chaotically had “frozen” the illness in place: the pathogen neither went deeper nor got expelled, just sat in the lung consuming the patient for a month.

Doctor Wang reviews every previous prescription

At this point the patient’s father — Mr. Beiya — brought out all the formulas the earlier doctors had written.

Doctor Wang read through each one carefully. Among them, only the very first doctor, a certain Doctor Gu Tingquan, had used the correct approach — clearing and washing the lung and stomach. Gu Tingquan happened to be Doctor Wang’s friend too, and his formula had been right — but the family hadn’t stuck with it. As for the later doctors — warm dispersing and ascending, warming yang, nourishing yin with cool blood-clearers — everyone had his own idea and his own lineage.

💬 Note from Doctor Luo: Doctor Wang sighed inwardly as he read them: every formula showed real thought, they were all “good” formulas — but none had hit the actual disease mechanism. They never matched what was really going on, so a month passed without improvement. When the medicine doesn’t match the pattern, even the most exquisite formula is wasted effort.

The sticking point: the son says “there’s a ball of cold qi in my chest”

After reviewing the formulas, a problem emerged. Doctor Wang wanted to lead with sheng shi gao (gypsum) — a cold-natured herb, the classic for clearing severe heat. But Mr. Beiya didn’t dare give it to his son:

“My son’s stools have been loose all along — isn’t that yang deficiency? If we give him this cold medicine, will that work?”

At the follow-up visit the next day, the family finally admitted the truth: the medicine from yesterday was never taken. They had invited him back hoping he would produce something “safer.”

Doctor Wang couldn’t believe it: you didn’t take it? You invite me here, and then you don’t take my medicine?

💬 Note from Doctor Luo: Doctor Wang said: my approach is the safest one there is. If you think something’s wrong with it — yes, gypsum is cold in nature, but my prescription matches the pattern! Right now this patient clearly has heat. If we don’t use gypsum, I can’t find you another herb that clears heat this well — there isn’t one. And if you think a lukewarm, ambiguous, neither-hot-nor-cold formula is “safer” — then your son’s illness is in real trouble.

Mr. Beiya could see the logic and decided to let him try. But when the formula reached the son, Shi Songxi refused on the spot:

“No! I feel a ball of cold qi in my chest — even my drinking water has to be hot. How can I possibly swallow this cold medicine?”

— He firmly refused to take it.

💬 Note from Doctor Luo: This whole family — the father wobbled, and so did the son. The pity of it: the son actually admired Doctor Wang — he knew Wang was a brilliant clinician — so the next day he still called him in. Three days of invitations, and still the formula went untaken. It’s a sad and frustrating picture: he thought he understood a little, but didn’t really understand at all; he didn’t trust the famous doctor’s formula, yet he couldn’t do without the famous doctor either.

Doctor Wang’s patient explanation: it’s not cold — phlegm is blocking the qi

Facing this patient with his “ball of cold qi in the chest,” Doctor Wang didn’t throw up his hands and leave. Instead he said: your illness is exactly what I wanted to explain in detail!

He laid out a long argument: when an external pathogen enters the lung channel, the lung by nature is clear and descending — it presses qi down. Now the pathogen is blocking it; the lung’s clear-descending function no longer works, lung qi cannot descend, the body’s fluids can no longer circulate properly, they gather together and congeal into foam and phlegm. That’s why Shi Songxi kept spitting sticky phlegm — that phlegm is nothing but transformed body fluid.

This phlegm sits entrenched in the chest, and qi cannot rise and fall freely — it’s blocked there. You feel cold not because there is cold, but because it is blocked. When qi fails to circulate, qi and blood cannot warm and nourish the body, and a person feels chilled.

💬 Note from Doctor Luo: This is a lesson that appears again and again in Doctor Wang’s clinical experience: when phlegm-dampness congeals inside the body, it blocks qi circulation, qi and blood fail to warm the body, and the person feels cold. In this situation you must never warm the yang! It looks cold, but it’s really phlegm-heat — clear away the phlegm, let the qi circulate, and the cold feeling disappears on its own.

So how do you tell true from false? Doctor Wang taught two methods:

First, look at the pulse. A rapid pulse, beating fast, usually means heat.

Second, look at the tongue. Have the patient curl up the tongue — in such patients the tongue body is red (the part underneath, not covered by coating), even though it’s covered by a snow-white coating. Underneath the white, the tongue body is red.

💬 Note from Doctor Luo: A white coating over a red tongue — that’s the classic signature of “false cold.” From now on, when you meet this situation, learn to check the tongue and you’ll be able to tell cold from heat — don’t be fooled by the surface “cold” feeling.

Doctor Wang added: your illness has not transmitted through the channels — the pathogen isn’t that fierce, which is why you can still sit here today and still feel the cold in your chest. If the pathogen had really gone deeper and entered the pericardium — then it would be black tongue and clouded spirit, and we’d need the Xi Jiao Di Huang Tang (rhinoceros horn and rehmannia decoction) class of rescue formulas. That would truly be dangerous.

You haven’t transmitted — but you’ve lost a month. The longer heat burns, the less fluid remains and the weaker the upright qi becomes. The more chaotically medicines were used, the more rigid this stalemate has become. Don’t keep doubting the White Tiger Decoction — take the medicine promptly!

Another voice: “gypsum can kill people”

Shi Songxi began to warm to the idea of taking the medicine. But then someone nearby spoke up:

“I saw it with my own eyes — a relative of mine drank gypsum, and his life was gone. He died!”

Was the man lying? Doctor Wang’s reply was very honest: not necessarily.

💬 Note from Doctor Luo: Gypsum is generally a very safe herb, but such cases do exist — especially with extremely weak people, particularly the elderly, when too much gypsum is given, the patient collapses after one dose. Why? Insufficient upright qi. That’s why Zhang Zhongjing, in the Treatise on Cold Damage, added ginseng when using White Tiger Decoction for people whose qi was somewhat deficient (White Tiger plus Ginseng Decoction). And the modern master Zhang Xichun was even more careful — whenever he saw an elderly or weak patient, he always paired in dang shen (codonopsis); with codonopsis in the formula, nothing goes wrong. So what the man said may not be false — but the physician has his own way of guarding against it.

The grand consultation: worthies assemble, and Doctor Wang stakes his position in public

The story spread, and Mr. Beiya panicked again: a month of illness, deafness, diarrhea — with upright qi this depleted, this formula is too cold, isn’t it?

So the family decided: tomorrow we’ll invite the famous physicians of Guangzhou for a joint consultation! Bring in all the experts and discuss together.

💬 Note from Doctor Luo: This is roughly what the earliest “consultations” looked like. But consultations can be a mixed blessing — the more famous doctors, the more opinions; everyone argues, nothing gets decided after hours of discussion, the family understands even less, and in the end the illness suffers. This family was wealthy, and the next day the experts really did come.

The next day Doctor Wang arrived for his house call and walked in: there they were — the worthies had all assembled, a roomful of famous doctors seated. And there was Mr. Beiya — praying and burning incense, frantic and distraught, clutching his son and chanting supplications.

Doctor Wang saw the scene and thought: this could go on forever — if these people start debating, whose advice do we follow? So he didn’t stand on ceremony:

“Bring me paper and brush this instant! I’ll write the formula right now — don’t let the illness wait.”

He set down a case record on the spot and announced to the room:

“The illness has dragged on, the medicines have had no effect, and the master of the house has lost his composure. I have prescribed White Tiger Decoction three times, and he hasn’t taken it. Yet he has summoned me again today because he wants his son to recover. What principle do we follow? When the disease is present, use the medicine for that disease — he has a heat pattern, so I use heat-clearing medicine. All of you are here today — no need to each offer your lofty views. You’ve all been treating him for a long time without results — what further lofty views are there? Listen to me!”

Then he quoted an old saying: “For nasal blockage, treat the heart; for deafness, treat the lung.” When lung heat moves into the large intestine, it produces chang-pi (dysentery-like diarrhea). The lung and large intestine are paired as exterior and interior — heat from the lung transmitted to the gut is exactly why his stools are loose. This is not yang deficiency — this is heat, and it should be cleared just the same. The bitter mouth may resemble a Shaoyang pattern, but we needn’t be bound by Shaoyang — the White Tiger Decoction covers it. Use it boldly, and waste no more time!

💬 Note from Doctor Luo: This is Doctor Wang’s courage — when the disease is present, use the medicine for that disease. No matter what others say, once he has confirmed the mechanism he insists on it. And he’s right: loose stools don’t automatically mean you should warm the yang and fortify the spleen — if it really is lung heat moving into the large intestine, clear the heat and the diarrhea resolves on its own.

One sentence from Gu Tingquan settles the debate

Doctor Wang’s speech landed with force. Then Gu Tingquan — the first doctor who had used the lung-stomach clearing method, an old friend of Doctor Wang — stepped forward and said to Mr. Beiya:

“Mengying excels in courage and judgment — he is completely dependable! If you won’t trust Wang Mengying, then the rest of us have no better method to offer.”

The other physicians present — Gu Youmei, Xu Ziqing, Zhao Dilou — all nodded in agreement.

💬 Note from Doctor Luo: Everyone in the room knew which formulas had been wrong. When Doctor Wang spoke clearly and his peers added their weight, the family finally calmed down. You notice how elegant those old names were — Gu Youmei, Xu Ziqing, Zhao Dilou — all famous physicians of Guangzhou.

The prescription: White Tiger Decoction as the base, plus a squad of phlegm-transforming vanguard herbs

The formula was written — still White Tiger Decoction, but with Doctor Wang’s modifications.

The base: sheng shi gao (gypsum), zhi mu (anemarrhena), jing mi (rice), gan cao (licorice) — clearing the great heat of the yangming channel.

And the additions were all masters of transforming phlegm and clearing heat:

• American ginseng — tonifies qi and nourishes yin. Doctor Wang was especially fond of American ginseng; his famous Yu Ling Gao (Jade Spirit Paste) also includes it when heat is present. In his day, American ginseng came from Canada, imported from overseas — it wasn’t yet cultivated in China;
• Bei mu (usually Zhe bei mu, fritillaria bulb) and tian hua fen (trichosanthes root powder) — transform phlegm-heat;
• Huang qin (scutellaria) — clears heat;
• Zi wan (aster root) and xing ren (apricot kernel) — open the lung qi, transform phlegm, stop cough;
• Dong gua ren (winter melon seed) — transforms phlegm and promotes urination, pushing phlegm-heat out;
• Pi pa ye (loquat leaf) — spreads and opens lung qi, cools and transforms phlegm-heat;
• Zhu ye (bamboo leaf) — drains heart fire, guiding heat out through the urine;
• Zhu ru (bamboo shavings) — the white inner layer of bamboo, transforms phlegm-heat;
• Tian zhu huang (tabasheer) — a growth on bamboo, also transforms phlegm.

💬 Note from Doctor Luo: Look at the formula: White Tiger Decoction clears heat as the base, and everything else opens lung qi and transforms phlegm-heat — zhu ye, zhu ru, tian zhu huang, the “three bamboo treasures” all together. Because the disease is in the lung, and the lung generates phlegm, the lung must be regulated. Doctor Wang worked this approach with great fluency. Dong gua ren was something we used a lot during the COVID period too — when the lung is full of phlegm and turbid matter that won’t come out, we use large doses of winter melon seed, 30 to 60 grams, to push it out, with excellent results. This whole “clear phlegm-heat” school of practice was learned from Doctor Wang.

The result: one dose opened the throat, three doses cleared everything

The effect of the formula was immediate:

One dose, and the throat was completely opened — after a single serving the throat felt light and unobstructed; after three servings every symptom was gone, he could take congee, and the man was calm and stable.

Doctor Wang then switched to a sweet-moistening, fluid-generating formula to finish the recovery, and the illness was completely cured.

💬 Note from Doctor Luo: A whole family and a month of treatment couldn’t fix it; Doctor Wang almost single-handedly cleared the throat with one dose and eliminated every symptom in three. Zhou Guangyuan later praised this case: “This case is not only worth transmitting for its treatment method — in its analysis of the illness it truly surpasses the ancients.” Not just the phlegm-heat formula deserves study; his crystal-clear analysis of the condition exceeded what earlier doctors had achieved.

How to tell “false cold, true heat”? Doctor Luo teaches you three checks

After the case, Doctor Luo Dalun gives us the key points: phlegm-heat really does wear a disguise — the patient feels chilled, fears cold, has a cold chest, and wants hot drinks. So how do you determine cold vs. heat?

Remember three things:

1. The color of the phlegm — if the phlegm is yellow (mouthful after mouthful of yellow phlegm), that’s heat; yellow phlegm is the decisive sign;
2. The tongue — the tongue body is red (curl the tongue up and look underneath — it’s red), even if a white coating sits on top;
3. The pulse — beats fast (a rapid pulse).

💬 Note from Doctor Luo: Real phlegm-heat almost never escapes these three checks. The cold feeling is an illusion created by phlegm blockage and qi failing to circulate — and when that cold feeling is set against yellow phlegm, the yellow phlegm wins: that tells you heat is present. Sometimes cold and heat do coexist, but in a case like Shi Songxi’s it was genuine phlegm-heat with no cold inside at all. So when you meet a situation that “looks cold but is really hot,” never reach for yang-warming herbs first — clear the phlegm-heat first, let the qi circulate, and the cold feeling disappears by itself.

Bonus: when your child coughs, look at the color of one mouthful of phlegm

Doctor Luo Dalun also shared his own experience of applying Doctor Wang’s approach to coughs:

💬 Note from Doctor Luo: When I regulate coughs and external-contraction illnesses, I love using Doctor Wang’s herbs — xing ren (apricot kernel), pi pa ye (loquat leaf), zhe bei mu (fritillaria), huang qin (scutellaria)… When a child has been coughing for two or three days without improving, my usual remedy resolves it in two or three doses. How do I judge? Look at the color of the phlegm — have the child cough it out and check: the child plays, then “pah” — one mouthful of phlegm. If it’s a sticky yellow lump, the picture is absolutely clear. Cross-check with the tongue, and prescribe Doctor Wang’s style of formula. One or two doses break the fever, the cough basically passes, and it’s done in two or three days. Parents are astonished: “Aren’t you all learning the same Chinese medicine? We saw doctors for so long and nothing worked!” The truth is, this is exactly Doctor Wang’s approach — distinguish cold from heat. For cold, don’t use herbs recklessly; for true heat, regulate with the phlegm-heat-clearing path. Once you’ve separated cold from heat, most external-contraction illnesses are easy to regulate; what remains is judging dosage strength and whether upright qi is sufficient.

Doctor Wang’s character: the physician who was invited three times and never gave up

Finally, Doctor Luo Dalun says: the hardest thing about this case wasn’t the technique — it was Doctor Wang’s character.

💬 Note from Doctor Luo: Most people, facing this family — a roomful of doctors invited, three visits from me, the formula refused twice, and someone telling horror stories about gypsum killing people — would lose their temper and walk away: you don’t trust me, then I’m done. But Doctor Wang was a man who truly cared about getting it right: he explained the reasoning completely, stated his position in front of a roomful of famous physicians, and held to the formula he believed was correct. For his patients, he could be genuinely stubborn. The doctor-patient relationship today is delicate — at the slightest dissatisfaction a doctor will simply stop prescribing. But Doctor Wang’s spirit will always be a beautiful thing. When a doctor like that really exists in the world, it’s one of the good things about life.

What to take away

• “Looks cold” does not mean “is cold.” When phlegm-dampness blocks the chest, qi cannot circulate, and the body feels chilled — but the root is phlegm-heat, not cold. Never warm the yang blindly.
• Three checks to separate cold from heat: the color of the phlegm (yellow = heat), the tongue body (red underneath any white coating = heat), and the pulse (rapid = heat).
• Disease, not reputation, decides the medicine — you bing zhe, yong shi yao (“when the disease is present, use the medicine for that disease”). Doctor Wang stood by White Tiger Decoction through three refusals, a consultation of famous doctors, and a deathbed rumor — because the pattern was clear.
• When qi is weak, pair gypsum with ginseng. Zhang Zhongjing added ginseng to White Tiger Decoction for deficient patients; Zhang Xichun routinely paired codonopsis with gypsum for the elderly and weak — this is the safeguard against “gypsum scares.”
• Loose stools are not always spleen deficiency. If lung heat has moved into the large intestine (the lung and large intestine are paired), clearing the heat cures the diarrhea.

Arranged from Doctor Luo Dalun’s commentary on Doctor Wang Mengying’s medical cases; the case is from Wang’s Medical Cases (《王氏医案》/《回春录》).