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A patient suffered from fever, aversion to cold, and spontaneous sweating. The pulse was floating and weak. I administered Guizhi Tang (Cinnamon Twig Decoction) in three doses, and the condition was cured. Zhang Zhongjing stated: In Taiyang Wind Strike syndrome (Taiyang Fengzheng), where the Yang aspect of the pulse is floating and the Yin aspect is weak, there is spontaneous sweating, severe aversion to cold, chilly aversion to wind, and mild fever; Gui Zhi Tang is appropriate.

The commentary states: Zhang Zhongjing said that if the Cun Kou (inch position) pulse is faint, it is named Yang insufficiency. When Yin Qi ascends into the Yang region, it causes shivering aversion to cold. If the Chi (cubit position) pulse is weak, it is named Yin insufficiency. When Yang Qi sinks and traps within the Yin region, it causes fever. This results from a physician inducing excessive sweating, thereby weakening Yang Qi, and subsequently using strong purgatives, thereby weakening Yin Qi. This is an iatrogenic disease. Generally speaking, when Yin is insufficient, Yang follows inward, causing internal heat; when Yang is insufficient, Yin takes advantage of the deficiency to enter the Yang region, causing aversion to cold. Since Yin and Yang fail to return to their proper positions, fever and aversion to cold occur. Therefore, Sun Simiao stated: In cases of heat, one must not attack vigorously; once the heat is removed, cold will arise.

Li Yin from Weiyang initially presented with headache, fever, and aversion to wind. A physician used purgation, after which his epigastrium suddenly became hard, his neck became stiff, and he experienced shortness of breath, resembling the typical presentation of Jie Xiong (Chest Binding). I said: Fortunately, your pulse is not floating, and you have no mental restlessness; only Xian Xiong Tang (Draining Chest Decoction) is suitable. After administration, the pathogenic factor was expelled overnight.

The commentary states: Zhang Zhongjing mentioned that if a disease originating in the Yang stage is incorrectly treated with purgation, heat enters the chest, resulting in Jie Xiong (Chest Binding); this occurs because purgation was applied too early. Generally, if aversion to cold persists, the exterior syndrome has not yet resolved; applying purgation at this time causes Yang Qi to sink inward. When Yang Qi sinks and resists, pain occurs. If the pulse is floating, purgation is contraindicated; misuse leads to death. If Jie Xiong (Chest Binding) is accompanied by mental restlessness, death is inevitable. This is a critical adverse syndrome, requiring careful differentiation.

The son of Mr. Li in the east of the city, aged eighteen, suffered from Taiyang Cold Damage complicated by Jie Xiong (Chest Binding). The condition was severe: from the heart region down to the umbilicus, touch was intolerable, accompanied by shortness of breath and mental restlessness, constituting true Jie Xiong (Chest Binding). The physician intended to use purgation immediately. I happened to pass his door and saw him looking pale and distressed. I asked: "Why do you look worried?" He replied: "My eldest son suffers from Taiyang Cold Damage presenting as Jie Xiong (Chest Binding). The physician proposes purgation, but we hesitate." I proceeded to diagnose him. The pulse above the Guan (bar) position was floating and large, indicating that the exterior syndrome had not yet resolved; purgation is contraindicated. I said: "The situation is urgent." I applied moxibustion using Huanglian Bing Zi (Coptis Cake) on the umbilicus for dozens of moxa cones. Upon obtaining De Qi (arrival of Qi), the pathogenic factor moved downward, and the epigastrium and abdomen softened. Subsequently, I administered herbs to harmonize Qi and Blood and release the muscle layer. After several days, he recovered. Had purgation been used at that time, it would certainly have resulted in medical error leading to death.