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A patient suffered from Shanghan (Cold Damage) for a month, trembling with teeth chattering, unable to speak clearly. The surrounding physicians looked at each other, helpless. Zhongbin arrived later, examined the pulse, and said, "Quickly fetch mutton." The other physicians said, "Mutton is strictly contraindicated in Shanghan." Zhongbin replied, "Do not chatter." He took over a jin (approx. 500g) of mutton, boiled it until cooked, selected the central large piece, boiled it again in fresh water for a long time, obtained one sheng (approx. 200ml) of broth, and administered it to the patient. Soon, the tremors ceased, profuse sweating occurred, and the patient recovered. (From *Wang Zhizhong's Collected Works*)

Zhang Sheng from Pingjiang suffered from Shanghan, presenting with red eyes, retracted tongue, cracked lips, asthma, loss of voice, and spontaneous diarrhea, with critical condition. The physicians wished to first stop the diarrhea. Coincidentally, Monk Baojian, a physician from Xiuzhou, passed through Suzhou. Zhang invited him to examine. After taking the pulse, Baojian prescribed Yinchen Wuling San (Artemisiae Scopariae Five-Ingredient Powder) combined with Baihu Tang (White Tiger Decoction), and the patient recovered. When asked for the rationale, the monk said, "Zhang Zhongjing stated that excess patterns in the five zang organs lead to death. Now that the large intestine is open, stopping the diarrhea would lead to immediate death. Wuling San guides the excretion of dampness via urination, while Baihu Tang guides out the pathogenic heat. This is a fundamental understanding of medicine; what difficulty is there?" (From *Yunlu Mancao*)

It is commonly believed that errors in the three methods of sweating, vomiting, and purging in Shanghan treatment result in "ruined syndromes" (bad outcomes). In the past, Zhang Zhihe used Dushen Tang (Single Ginseng Decoction) to save a dying patient who had cold hands and feet, nearly absent breath, and an open mouth unable to speak. Zhang Zhihe decocted one liang (approx. 30g) of Ren Shen (Ginseng Root, de-rooted) with one qian (approx. 3g) of Fu Zi (Aconite Lateral Root) in a clay pot until reduced to one bowl. It was cooled in fresh well water, and the patient drank it all at once. Soon, sweat trickled from the tip of the nasal bridge. This is a diagnostic sign: the upper part of the nasal bridge corresponds to the Spleen. If sweat appears on the nose tip, it indicates that Spleen Qi remains and Earth Qi circulates within the body, thus salvation is possible. Recently, Lu Tong's wife, suffering from an epidemic disease for over twenty days postpartum, presented with deficient Qi and weak pulse, resembling a ruined syndrome. She was also cured with this decoction. Sun Simiao stated that Ren Shen Tang must be decocted with flowing river water; using well water renders it ineffective because flowing water possesses the property of promoting free flow.

Secular wisdom claims "the head has no cold pain, the abdomen has no heat pain," which is an unverified assertion. The Yellow Emperor asked: "Why does headache persist for years? What is the explanation?" Qibo answered: "This may be due to severe cold invasion penetrating deep into the bone marrow. Since the brain is the master of the marrow, cold counterflow causes headache and toothache. I once treated a woman surnamed Yang, aged fifty-something, suffering from chronic headache for years. Treatments targeting wind or phlegm were ineffective. Her left cun (inch) pulse was deep, slow, and hollow (Kou), indicating deficiency of both Qi and Blood. I prescribed Dang Gui (Angelica Sinensis Root) two liang and Fu Zi three qian. After one dose, symptoms halved; after two doses, the illness vanished without recurrence. When medication matches the syndrome, efficacy is as swift as shadow following form. Another woman with chronic migraines was cured by Da Chengqi Tang (Major Order the Qi Decoction). Why? Because excessive Dryness Metal of the Yangming channel overacts on Liver Qi, causing stagnation. Stagnation leads to blood obstruction, blocking upper and lower circulation. Thus, Da Chengqi Tang unblocks dryness accumulation, allowing Qi and Blood to flow freely, thereby unblocking Liver Qi. *Shanghan Zhili* states: Shaoyang channel migraines often accompany constipation and are suitable for purgation. This applies to new diseases. For chronic cases with insufficient Yuan Qi, different management is required."