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A provincial official frequently suffered from acne and boils on his back and neck, which healed only to recur. Zhang Congzheng (Dai Ren) stated: This is an excess of blood heat in the Taiyang (Greater Yang) channel. He first instructed him to undergo emesis (induced vomiting) to expel pathogens, followed by acupuncture to release purple-black stagnant blood, after which the disease did not recur.

Li Jizhi from Zezhou suddenly suffered from toothache, frowning and remaining silent. Luan Jingxian saw him and asked: Why do you not take medicine? Li replied: I have no medicine for toothache. Luan said: Do you not recall what Zhang Dai Ren said? Heat excess in the Yangming (Bright Yang) channel should be treated with severe purgation. Consequently, he was given 70 pills of Zhouche Wan (Boat Cart Pill). After finishing the medication, he was invited by several close friends to drink, and forced to consume several cups of hot wine. The medicinal effect was triggered by the hot wine, resulting in complete vomiting; upon completion of vomiting, the pain ceased. Li laughed loudly and said: Dai Ren is a divine immortal! Three or five days later, the pain returned. He took over a hundred pills of the previous medicine, defecated several times heavily, and then recovered.

When Dai Ren passed through Xicheng, a man suffered from Lin syndrome (dysuria/painful urinary frequency). Dai Ren ordered him to eat salted fish immediately. Shortly after, the man felt extreme thirst. Dai Ren then allowed him to drink water freely, and subsequently treated the Lin syndrome with medicine, resulting in immediate urination. Lin syndrome occurs due to a lack of fluids (or impaired fluid metabolism), causing涩 (astringency/stagnation) in urination.

A man in the household of Zhao Pingshang, aged over twenty, suffered from halitosis so foul that it resembled a toilet, such that even relatives refused to speak with him. Dai Ren said: The Lung Metal naturally has a fishy smell; when Metal is refined by Fire, and Fire governs scorched odors, the result is such. Over time, it becomes putrid, which relates to the Kidney. This is an extreme heat condition manifesting as a reverse transformation into Water characteristics (true heat mimicking cold/water pathology). Since the disease is located above, emesis is indicated. First, Chetiao San (Tea Regulation Powder) was used to induce emesis, eliminating seven-tenths of the pathogen; at night, Zhouche Wan (Boat Cart Pill) and Xunchuan San (River Clearing Powder) were administered to purge, resulting in five to seven bowel movements. By morning, the bad breath had completely ceased. Alas! Some people suffer from halitosis throughout their lives without dying; the world erroneously attributes this to a deviation of the Lung system connecting with the Stomach, thus causing odor. This is a false discussion!

Li Shenyán, a magistrate from Runan, due to laborious official duties, drank water while sitting on wet ground. Consequently, dampness descended and flowed into the bladder sac, causing severe swelling and unbearable pain. Treatment with Jinlingzi (Violet Fruit) and Chuanlianzi (Szechwan Chinaberry Fruit) was ineffective, so he sought treatment from Dai Ren. Dai Ren said: You may take Xieshui Wan (Water Draining Pill). Li was confused by this suggestion. A few days later, the pain became intolerable, and he finally submitted to Dai Ren's treatment. First, Zhouche Wan (Boat Cart Pill) and Xunchuan San (River Clearing Powder) were used to purge, discharging more than ten stools of greenish-yellow mucus, after which the pain stopped; subsequently, Huixiang Wan (Fennel Pill) and Wuling San (Five-Ling Powder) were taken to regulate the body. Within three days, the swelling subsided, and the condition never recurred until old age. Shan disease (hernia/genital disorders) belongs to the Liver channel; the discharge of greenish mucus reflects the color of the Liver.