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In the summer of the Wuzi year, the Jiao River in Huizhou Prefecture swelled violently, flooding and inundating fields, houses, humans, and livestock everywhere, with She County and Xiuning being particularly severe. Mr. Rao was commissioned to inspect the disaster area. Affected by the steaming heat and dampness, he contracted latent pathogens in the Mo Yuan (the space between the exterior and interior). As autumn arrived, the illness manifested, initially presenting with alternating chills and fever resembling malaria, followed by fever without chills. My clansman, Mr. Simin, treated him for twenty days. The high fever subsided, but a slight tidal fever occurred every afternoon. It was judged that the pathogen had departed while the healthy qi was deficient, so the treatment shifted to nourishing yin and harmonizing the stomach. The next day, chills and fever recurred. It was considered a relapse of the common cold, and methods to support healthy qi and expel pathogens were used, but the symptoms remained unchanged, and his spirit and physique grew increasingly fatigued. Considering the prolonged nature of the illness and the deficiency of both yin and yang, continuous administration of tonics failed to stop the chills and fever. He then invited me to consult on the case.

Upon entering the office, Mr. Rao was experiencing an episode of chills and fever, groaning on his sickbed. After completing the pulse diagnosis, Mr. Simin happened to arrive and said to me, "I have treated Ancestor Yan's illness many times; it improves but recurs. I leave it to you to decide." I replied, "The current pulse is rapid and slightly wiry, and thirst persists during fever. This belongs to late-onset seasonal pathogens in autumn, with symptoms resembling malaria. The overall situation is not dangerous. However, due to the prolonged illness, the healthy qi is indeed deficient, and residual pathogens may not be fully cleared. Over-tonification risks stagnating the pathogens, while over-clearing heat may damage the healthy qi. Therefore, within the formula supporting healthy qi, we should subtly incorporate the principle of harmonization, allowing the pathogen to retreat without injuring the healthy qi. This would be ideal." Mr. Simin agreed, and I prescribed the following: Polygonum multiflorum (He Shou Wu), Ginseng (Ren Shen), Angelica sinensis (Dang Gui), Poria (Fu Ling), Licorice (Gan Cao), Vigna angularis seed coat (Liao Dou Yi), Dolichos lablab shell (Bian Dou Qiao), Tangerine peel (Chen Pi), Pinellia (Ban Xia), and Glutinous rice root hairs (Nuo Dao Gen Xu). The decoction included fresh ginger and red dates as guides, prepared with half well water and half river water. It was left exposed overnight and taken warm the next morning. We agreed to discuss further the following morning. Upon my return, his family reported that after taking the medicine the previous day, there were no more chills or fever, and he slept peacefully at night. Entering the room, Mr. Rao sat up for consultation and smiled, saying, "The malaria demon has been driven away by you." Further adjustments were made in consultation with Mr. Simin, and he recovered in less than ten days. Mr. Rao was skilled in landscape painting, emulating Ni Zan's style, valuing ink like gold, making his works hard to obtain. After recovering, he personally painted a picture to gift me, accompanied by a preface narrating the event.

In the winter of the Wuzi year of the Daoguang era, Mr. Nongqing, son of Mr. Rao Yangweng in the prefecture city, fell ill. Initially, he presented with chills, fever, headache, and cough. After one dose of acrid-dispersing medicine, the next day he exhibited only fever without chills, accompanied by thirst, irritability, cough with blood-streaked sputum, and sudden syncope in the afternoon. A letter was sent urgently inviting me at night. Arriving in the city at dawn, I observed his face and eyes were red, tongue coating yellow, deafness, hacking cough with hypochondriac pain, sweating without reduction in fever, and the pulse was surging, rapid, and hurried. I told Mr. Rao, "Your son's illness is Wind-Warmth invading the Lung, with pathogens in the Upper Jiao. Immediate clearing and resolving are necessary to prevent spread to the Middle and Lower Jiao. Acrid-dispersing agents should not be used." The prescription included Vigna angularis (Liao Dou), Licorice (Gan Cao), Mulberry leaf (Sang Ye), Trichosanthes peel (Lou Pi), Apricot kernel (Xing Ren), Platycodon (Jie Geng), Burdock fruit (Niu Bang Zi), Fritillaria (Bei Mu), and Pear peel (Li Pi).

Summoned again the next morning, I learned that during the night, the fever was severe with irritability and delirium, and hemoptysis was heavy. His face and eyes remained red. After the pulse diagnosis, syncope recurred, with profuse sweating on the forehead. Mr. Rao was anxious and hesitant. His cousin, Huang Jiutang, happened to visit. I told him, "This case is indeed Wind-Warmth disease, but given the patient's constitutional deficiency and severe illness, prognosis is guarded. The previous formula was too weak, hence ineffective." Cousin Huang said, "My view is the same; how should we medicate?" I replied, "It is difficult to say. The term 'Wind-Warmth' appears in Zhang Zhongjing's *Treatise on Cold Damage*, but only describes pulse/symptoms and complications from misdiagnosis, without providing formulas. From Wang Shuhe onwards, there were also no established treatments. Only Zhu Fengyi created six formulas, establishing a school. However, since it states diaphoresis is contraindicated, why does Wei Rui Tang contain Ephedra (Ma Huang) and Notopterygium (Qiang Huo)? Since the Song and Yuan dynasties until now, numerous experts have emerged, yet their discussions on Wind-Warmth lack a consensus that can serve as a standard. Only recently, Mr. Wang Guangchao from Xiuning County established the Wind-Warmth Decoction, using only three herbs: Allii tuberosi bulb (Wei Rui), Vigna angularis (Liao Dou), and Licorice (Gan Cao). The formula is simple and potent, showing profound insight. In treating this condition, I usually expand upon this formula's scope and often achieve success." Cousin Huang agreed. Thus, the prescription was modified to include Glehnia (Sha Shen), Rehmannia (Sheng Di), Moutan bark (Dan Pi), Lycium bark (Di Gu Pi), Anemarrhena (Zhi Mu), Fritillaria (Bei Mu), and Scutellaria (Huang Qin), guided by Reed rhizome (Lu Gen), Pear juice, and White honey. The effect was significant. After several consultations, the fever gradually subsided, and bitter-cold medicines were reduced. The treatment then shifted to nourishing yin and moistening the lungs. After two months of regulation, he fortunately survived. This case succeeded because Mr. Rao trusted completely and Cousin Huang supported sincerely. If either were missing, success would not have been achieved. I often tell people: "When a major illness arises, it is essential that the family trusts firmly, the doctor maintains authority, and bystanders do not interfere rashly. If any one of these three is missing, cure is impossible."