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Treats food stagnation leading to epigastric fullness and obstruction (Pi), as well as abdominal distension and enlargement in children, frequent pain, and disharmony of the Spleen and Stomach. This formula is more effective than Zhizhu Wan (Aurantium Decoction).

Baizhu (Coated with flour and stir-fried), Chishao Yao (Stir-fried with wine, 2 liang), Zhishi (Stir-fried with bran, 1 liang), Chenpi (1 liang). Grind into powder, use Huang Laomi paste boiled in He Ye soup as a binder to make pills, size of Torreya seeds. Take approximately 1-2 liang per dose (Note: The character "Shen" here is likely a textual error or variant for dosage instruction, typically implying taking a certain number of pills).

(Li Dongyuan) Treats Pi Ji (Spleen accumulation), located in the epigastrium, large as a plate, persisting for a long time without cure, causing the limbs to become weak and unable to support themselves. Or it may lead to jaundice, where dietary nutrients fail to transform into muscle flesh. (*Jin Gui Yao Lue* states: Hard and immobile masses are called "Ji" (accumulation), which are Zang organ diseases. Mobile and shifting masses are called "Ju" (gathering), which are Fu organ diseases. Analysis: Pi disease arises from the latent Yin and accumulated Yang, resulting in impaired Qi and Blood circulation. Its location is in the epigastrium, central to the body, causing blockage and fullness; these are all disorders of Earth (Spleen/Stomach). There is a distinction in severity between Pi and Zhang Man (distension). Pi is characterized by internal sensation of fullness and oppression, whereas Zhang Man presents with external signs of distension and urgency. Some cases arise from deficiency and decline of Middle Qi, failing to transport and transform subtle essences. Others arise from food and phlegm accumulation that cannot be metabolized. Still others result from excessive Damp-Heat ascending to the epigastrium. Ancient formulas used the bitter nature of Huang Lian, Huang Qin, and Zhishi to drain downward; the acrid nature of Hou Po, Ban Xia, and Sheng Jiang to disperse; the sweet, bitter, and warm nature of Ren Shen and Bai Zhu to tonify; and the bland nature of Fu Ling and Ze Xie to leach out dampness. It is appropriate to dissipate Qi from above and below. Only if there are signs of interior excess can slight guiding and draining methods be applied. People suffering from obstruction often prefer using purgative/diuretic drugs for temporary relief. However, after the drug effect wears off, the condition worsens, due to failure to examine the state of Middle Qi.)

Huang Lian (8 qian), Hou Po (5 qian), Wu Zhu Yu (3 qian), Bai Zhu (Earth-stir-fried), Huang Qin (2 qian), Yin Chen (Wine-stir-fried), Gan Jiang (0.5 qian), Gui Zhi, Ba Dou Shuang (0.4 qian).

(All Xi Xin Tang formulas utilize these ingredients.) Hou Po, Sha Ren... Wu Zhu Yu dries the Spleen and expels cold. Gan Jiang, Gui Zhi, Chuan Wu... Ba Dou can eliminate有形 (material/physical) stagnation and accumulation, possessing a decisive action to remove pathogenic factors. (Jie Gu said: Remove Wu Zhu Yu, Bai Zhu, Fu Ling, Ze Xian, Yin Chen, Chuan Jiao, Sha Ren; add Shi Chang Pu, Fu Shen, Dan Shen, Hong Dou, named Fu Liang Wan. Treats Xin Ji (Heart accumulation), starting from above the navel up to the heart... Pill. Zi Wan... Asthma... Yan... Ling... Ren...)