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Fuzi (Aconiti Lateralis Radix Praeparata, peeled and de-navelled, one piece) Dahuang (Rhei Radix et Rhizoma, soaked in wine) Huanglian (Coptidis Rhizoma, de-fuzzed, stir-fried) Huangqin (Scutellariae Radix, stir-fried, each 1 liang)
For Taiyang disease presenting with fullness and oppression in the epigastrium (Xin Xia Pi), sweating, and aversion to cold, this formula is indicated.
Fullness and oppression in the epigastrium is treated by Sanhuang (the "Three Yellows": Coptidis Rhizoma, Scutellariae Radix, and Rhei Radix et Rhizoma) to drain the heat causing the obstruction; aversion to cold and sweating are treated by Fuzi to restore Yang Qi. Without Sanhuang, the heat of the obstruction cannot be removed; without Fuzi, there is a fear that Sanhuang will further damage Yang Qi. With Fuzi addressing the heat aspect and Sanhuang addressing the cold aspect, the simultaneous use of cold and hot herbs constitutes disciplined military strategy. Zhang Ji (Zhang Zhongjing) was known as a physician skilled in commanding generals. Vulgar physicians, when using cold-natured herbs, do not combine them with hot-natured ones, and vice versa. How is this different from gluing the bridges of a zither and attempting to play music?

Shengjiang (Zingiberis Rhizoma Recens, four liang) Gancao (Glycyrrhizae Radix et Rhizoma, honey-fried) Renshen (Ginseng Radix, de-rhizome) Huangqin (Scutellariae Radix, stir-fried, each 3 liang) Banxia (Pinelliae Tuber, half sheng, processed) Huanglian (Coptidis Rhizoma, de-fuzzed)
For Taiyang disease or Wind-stroke where the physician erroneously applied purgation, resulting in diarrhea occurring dozens of times a day, undigested food in the stool, borborygmus (rumbling in the abdomen), hardness and fullness in the epigastrium, dry heaving, irritability, and inability to find peace, this formula is indicated.
When the pathogen is at the exterior level but the physician erroneously applies purgation, it creates an adverse situation. Purgation empties the Middle Jiao (Zhong Qi), allowing exterior pathogens to penetrate inward. Due to deficiency and inability to resist the pathogen, diarrhea occurs dozens of times daily, a condition now referred to as Diarrhea with Heat (Xie Re Li). Fire nature is rapid and urgent; although grain enters the stomach, it fails to digest in time, hence undigested food in stool. Rushing deficient Yang causes borborygmus. (Note: The original text implies Ren Shen is the holy medicine for Spleen/Stomach deficiency). Shengjiang, Banxia, and Ganjiang (Zingiberis Rhizoma) are the holy medicines for vomiting and rebellious Qi; Huanglian and Huangqin are the holy medicines for Pi-heat (fullness-heat).

Yuanhua (Genkwa Flos, boiled) Gansui (Kansui Radix) Daji (Euphorbiae Pekinensis Radix, each 5 fen) Dazao (Jujubae Fructus, ten pieces)
When the exterior syndrome of Taiyang disease has resolved, yet the patient presents with sweating, hardness and fullness in the epigastrium, hypochondriac pain, dry heaving, and shortness of breath, this indicates internal accumulation of evil heat and latent fluid retention (Fu Yin). This formula is indicated.
The pungency of Yuanhua can dissipate fluid retention; the bitterness of Daji and Gansui can drain water-dampness. It is also said that Gansui can reach directly to the site where water-dampness is knotted. These three substances are all峻利 (pungent and drastic/strongly purgative); therefore, Dazao is used to tonify Earth (Spleen/Stomach). This is analogous to the policy of distributing grain after a war. This formula should only be used in robust and strong individuals; those who are weak and emaciated should not be lightly administered this prescription.