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Typhoid (Shanghan), heat-stroke (Shangshu), and various conditions of warmth and coolness are all caused by pathogenic factors bullying the healthy qi. Using medicine is like confronting an enemy; after the medicine enters, the pathogen gradually recedes, but when the medicinal force exhausts, the pathogen flares up again. It is necessary to carefully observe the condition and palpate the pulse within one dosage period. If the prescription matches the syndrome, administer three to five doses continuously day and night, with the primary goal of eliminating the pathogen and ensuring peace from disease. This method is recorded only in Zhang Zhongjing's *Treatise on Cold Pathogenic Diseases* (*Shanghan Lun*) and Sun Simiao's *Essential Prescriptions Worth a Thousand Gold* (*Qianjin Fang*). Sun said: In summer, take five doses during the day and three at night; in winter, take three doses during the day and five at night. One must continue until the disease recedes before stopping. It is like defending against enemies; the more you drive them away, the more fierce they become, and only after pacifying them do you return home. This is a foolproof strategy for victory. Since the Song Dynasty, this method has been lost, so therapeutic effects are rare, and the merit of saving lives is sparse. I have used this method and repeatedly obtained miraculous effects.

The *Treatise on Acupuncture* (*Cizhi Lun*) states: Qi deficiency with body heat results from heat-stroke, because heat damages qi. The *Treatise on Flaccidity* (*Weilun*) states: If one travels far and becomes fatigued, encountering intense heat and thirst, then yang qi attacks internally, and heat lodges in the Kidney. The Kidney is the water organ. Now, if water cannot overcome fire, bones will wither and marrow will become empty, feet will be unable to support the body, developing into bone flaccidity (*Guwei*). Thus, the *Lower Classic* says: Bone flaccidity arises from great heat. This is damp-heat causing flaccidity, making people feel bone weakness and lack of strength. Therefore, treating flaccidity focuses exclusively on the Yangming channel. During late summer, damp-heat prevails, steaming and blazing intensely. When humans contract this pathogen, they experience limb fatigue, shortness of spirit, reluctance to move, chest fullness, shortness of breath, heaviness and pain in joints, or upward rushing qi with panting, body heat with irritability, epigastric distension and stuffiness, yellow and scanty urine, loose and frequent stools, or diarrhea with yellow mush-like stool or rice-water colored stool, thirst or no thirst, loss of appetite, spontaneous sweating with heavy body, or scanty sweating (indicating blood was affected first while qi was not). The pulse presents as surging and slow (*Honghuan*). If dampness combines with heat, a slow pulse (*Chi*) will be added. Although symptoms may interchange slightly and improve, the heavenly heat and damp command remain the same. It is appropriate to treat it with clearing and drying agents. The *Inner Canon* states: Yang qi guards the exterior and secures it. Heat causes qi to leak. Now, heat-pathogen harasses the defensive qi, causing body heat and spontaneous sweating. Astragalus (*Huangqi*) and Ginseng (*Renshen*), sweet and warm, tonify as sovereign herbs. Licorice (*Gancao*), Tangerine Peel (*Chenpi*), and Angelica Sinensis (*Danggui*), sweet, acrid, and slightly warm, tonify the middle and benefit qi as minister herbs. Atractylodes Rhizome (*Cangzhu*), White Atractylodes Rhizome (*Baizhu*), and Alisma Rhizome (*Zexie*), promote urination and drain dampness. Cimicifuga Rhizome (*Shengma*) and Pueraria Root (*Gegen*), bitter, sweet, and neutral, excel at releasing muscle-layer heat, utilizing wind to overcome dampness. Excess dampness prevents food digestion, leading to fullness and stagnation, so Fried Medicated Leaven (*Qu*), sweet and acrid, and Green Tangerine Peel (*Qingpi*), acrid and warm, digest food and move qi. The Kidney dislikes dryness; urgently eat acrid substances to moisten it. Phellodendron Bark (*Huangbai*), bitter, acrid, and cold, borrows its flavor and aroma to clear heat and nourish water. For deficiency, nourish the source of transformation. Schisandra Berry (*Wuweizi*) and Ophiopogon Tuber (*Maidong*), sour, sweet, and slightly cold, rescue the lung metal (Geng Metal) injured by heavenly heat as assistant herbs. This formula is named Qing Shu Yi Qi Tang (Clear Summerheat and Benefit Qi Decoction).