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It belongs to Yin deficiency and insufficient Yuan Qi (Original Qi). Dai Yunli stated: In the late summer and early autumn, when one experiences headache, weak legs, poor appetite, body fatigue, and fever, with a pulse that is wiry and large, one may use Buzhong Yiqi Tang (Tonify the Middle and Augment the Qi Decoction) removing Chaihu (Bupleuri Radix) and Shengma (Cimicifugae Rhizoma), adding stir-fried Baicao (Phellodendri Cortex); it is suitable to use Shengmai San (Generate the Pulse Powder), composed of Maimendong (Ophiopogonis Radix), Wuweizi (Schisandrae Fructus), and Renshen (Ginseng Radix et Rhizoma), from *Qianjin Fang*; or use Buzhong Yiqi Tang removing Chaihu and Shengma, adding stir-fried Baicao and Shaoyao (Paeoniae Radix); if complicated by phlegm, add Banxia (Pinelliae Rhizoma), Nanxing (Arisaematis Rhizoma prepared with alum), and Chenpi (Citri Reticulatae Pericarpium).

Shu Feng (Summerheat Wind) caused by phlegm can be treated with emesis. If complicated by fire or phlegm, excess patterns may utilize the vomiting method. The use of emesis for treating Shu Feng refers to Zhongshu (Summerheat Stroke). The patient must first have internal heat-fire and phlegm-excess conditions; due to seeking coolness and avoiding summerheat, they are attacked by the Eight Winds (pathogenic factors from eight directions), leading to stagnation and resulting in fever. Or there may be confusion and dizziness; after vomiting, sweating occurs. Fire stagnation resolves with sweat, wind dissipates with sweat, and phlegm is expelled through the surge of sweat, achieving three benefits at once. This was a treatment for those complicated by phlegm-excess at that time, not the general principle for treating all Shu Feng. For Shu Feng without complications, it is appropriate to use diaphoresis (sweating method) to disperse it.

The pulse of Wei Feng (Stomach Wind) is wiry, slow, and floating on the right Guan position. It is caused by eating and then exposing oneself to cool drafts. Symptoms include inability to swallow food, emaciation with abdominal distension, aversion to wind, excessive sweating on the head, and chest diaphragm obstruction. Weifeng Tang (Stomach Wind Decoction) is the principal treatment for this. Modifications should be made based on accompanying symptoms.

*Bencao* records that Cangzhu (Atractylodis Rhizoma) treats dampness and is applicable to both upper and lower parts. Erchen Tang (Two-Aged Decoction) added with Jiuhuangqin (Scutellariae Radix processed with wine), Qianghuo (Notopterygii Rhizoma et Radix), and Cangzhu can dispel wind and dry dampness. Erchen Tang treating dampness, when combined with lifting herbs, can moisten the stool and increase urination. For upper dampness, Cangzhu has strong effects; for lower dampness, lifting methods are preferred; for external dampness, surface-dispersing methods are suitable; for internal dampness, bland leaching methods are appropriate. Bland leaching treats dampness in the Upper and Middle Jiao (Burners). When dampness is in the upper part, mild diaphoresis is used to resolve it, avoiding excessive sweating; thus, herbs like Mahuang (Ephedrae Herba) and Gegen (Puerariae Lobatae Radix) are not used. Treatments for various dampness-induced symptoms are detailed under respective disease sections. Dai Yunli said: Herbs for treating dampness enter specific meridians and organs; if they effectively treat the condition, they are essential drugs. Is it true that only Cangzhu is universally applicable? Would your teacher speak thus to instruct others? Dai Yunli said: Diseases caused by dampness arise either from external invasion or internal generation. One must examine the local climatic sources. In the southeast, where the land is low and rainy, dampness enters externally, often starting from below; thus, heavy legs and Hongjiaojiao (Hong Kong Foot/Gout) are common, requiring dispersing via sweating, and chronic cases require dredging and leaching. In the northwest, where the land is high, people often consume cold, raw, or damp wheat noodles, or drink alcohol causing cold qi stagnation, preventing dampness from venting, leading to abdominal distension and pain, severe water drum distension, or whole-body edema like mud that does not rebound upon pressure; these arise internally. One must assess the amount of Yuan Qi and promote urination and defecation, addressing the root internally. However, external and internal factors interact everywhere, differing only in degree. Treatment must be symptomatic and not rigid. A thirty-five-year-old man, upon rising in September, suddenly lost vision clarity, unable to see objects clearly even after focusing for a moment, could not recognize figures, ate half his usual amount, felt extreme mental fatigue, and had been ill for five days. His pulse was slow, large, and slightly above four beats per breath cycle, indicating dampness exposure. Inquiry revealed he had slept on damp ground for half a month. Bai Zhu (Atractylodis Macrocephalae Rhizoma) was used as the Sovereign herb, Huangqi (Astragali Radix) and Chenpi as Ministers, and Fuzi (Aconiti Lateralis Radix Preparata) as an Assistant. After more than ten doses, he recovered. Various dampness pathogens lodging in the waist and knees causing heaviness and pain, and swelling of the calves, are treated with Chushi Dan (Dampness-Removing Pill), see the Hongjiaojiao section.