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Gancao (Licorice Root, *Glycyrrhizae Radix et Rhizoma*, 4 liang) Huangqin (Scutellaria Root, *Scutellariae Radix*, 3 liang) Ganjiang (Dried Ginger, *Zingiberis Rhizoma*, 3 liang) Huanglian (Coptis Rhizome, *Coptidis Rhizoma*, 1 liang) Banxia (Pinellia Tuber, *Pinelliae Rhizoma*, half sheng, washed) Dazao (Jujube Fruit, *Ziziphi Jujubae Fructus*, 12 pieces, split)
The above six herbs. Boil in ten dou of water. Decoct to obtain six sheng of liquid. Remove the dregs. Re-decoct to obtain three sheng of liquid. Take one sheng warm, three times a day.

Taiyang disease or wind-strike, the physician erroneously applies purgation. The patient suffers from diarrhea dozens of times a day, undigested food, borborygmus (rumbling in the abdomen), epigastric fullness and hardness with distension, dry heaving, irritability, and restlessness. Seeing the epigastric痞 (pi, stuffiness/fullness), the physician assumes the pathogenic factor is not exhausted and applies purgation again. The痞 becomes more severe. This is not heat accumulation; it is due to deficiency in the stomach and rebellious qi from outside invading upwards, thus causing diarrhea (Note: Original text says "bian ying" [hard stool], but context and commentary clarify it as diarrhea/xie li). Ganxiao Xiexin Tang (Licorice Decoction for Draining the Epigastrium) is indicated.
[Commentary by Lü Zhenming:] The diarrhea with undigested food and borborygmus are caused by emptiness in the stomach. The epigastric fullness, hardness, distension, dry heaving, irritability, and restlessness are caused by rebellious qi. If one applies purgation again because of the epigastric痞, it is a grave error of treating deficiency as excess (reducing the deficient further). This formula follows Shengjiang Xiexin Tang (Ginger Decoction for Draining the Epigastrium), removing Renshen (Ginseng Root, *Panacis Quinquefolii Radix*) and Shengjiang (Fresh Ginger, *Zingiberis Rhizoma Recens*). Because the stomach is deficient, the dispersing nature of Shengjiang is unsuitable. Because qi is rebellious, the tonifying nature of Renshen is unnecessary. Only Gancao (Licorice Root) is used as the sovereign herb to stabilize the middle jiao (middle warmer/spleen and stomach), allowing the stomach deficiency to recover and the痞 to resolve spontaneously.

Banxia (Pinellia Tuber, *Pinelliae Rhizoma*, half sheng, washed) Huanglian (Coptis Rhizome, *Coptidis Rhizoma*, 1 liang) Ganjiang (Dried Ginger, *Zingiberis Rhizoma*, 3 liang) Gancao (Licorice Root, *Glycyrrhizae Radix et Rhizoma*, prepared/zhi, 3 liang) Renshen (Ginseng Root, *Panacis Quinquefolii Radix*, 3 liang) Huangqin (Scutellaria Root, *Scutellariae Radix*, 3 liang) Dazao (Jujube Fruit, *Ziziphi Jujubae Fructus*, 12 pieces, split)
The above seven herbs. Boil in ten dou of water. Decoct to obtain six sheng of liquid. Remove the dregs. Re-decoct to obtain three sheng of liquid. Take one sheng warm, three times a day.

Five or six days into Taiyang disease, vomiting and fever indicate that Chaihu Tang (Bupleurum Decoction) syndrome is present. If purged with other drugs, and the Chaihu syndrome remains, administer Chaihu Tang again. Although purged, this is not a contraindication. The patient will inevitably experience shaking chills (zheng zhen), followed by fever and sweating, leading to resolution. If the epigastrium is full and painful upon pressure, this is Jie Xiong (chest binding/knotting), treated with Da Xianxiong Tang (Major Cathartic Pill for the Chest). If it is only full without pain, this is Pi (痞/stuffiness). Chaihu Tang is not appropriate; Banxia Xiexin Tang (Pinellia Decoction for Draining the Epigastrium) is suitable.
[Commentary by Lü Zhenming:] This is essentially Shengjiang Xiexin Tang, removing Shengjiang and using Banxia as the sovereign herb. It is also a variation of Xiao Chaihu Tang (Minor Bupleurum Decoction). Since the syndrome originates from vomiting, Banxia is elevated as the primary herb.