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Diarrhea presents in various forms. Beyond injuries caused by the Six Excesses (Wind, Cold, Summerheat, Dampness, Dryness, Fire) and Five Evils, as well as dietary damage, there are often mixed pathogenic factors, making it difficult to treat with a fixed prescription. The Master once treated a case of sudden Qi collapse leading to deficiency, where the patient suffered from acute diarrhea, loss of consciousness, closed mouth and eyes, extremely faint respiration, and was near death. The Master urgently moxibustioned Qihai (CV6), and administered over ten jin of Ginseng Paste, resulting in recovery. For cases of Yin deficiency where the Kidney loses its power of consolidation and retention, the Master employed vigorous tonification of the Kidney. In cases where accumulated phlegm in the Lung causes the Qi of the Large Intestine (its interiorly-exteriorly related organ) to become insecure, the Master used emesis to expel phlegm from the Upper Jiao, allowing Lung Qi to descend and the deficiency of the Large Intestine to naturally restore. For diarrhea caused by excessive worry and thought, which knots the Spleen Qi, preventing its ascending and lifting function, causing it to sink into the Lower Jiao, the Master resolved the stagnation and tonified the Spleen and Stomach, enabling Grain Qi to ascend. These examples cannot be exhaustively listed. Someone asked, "Why is your treatment of diseases so miraculous?" The Master replied, "There is no other secret; flexible application of principles is contained within the *Huangdi Neijing* (Yellow Emperor's Inner Canon). Familiarity with it leads to natural understanding." After retreating to study the *Huangdi Neijing* for three years, I came to understand that when treating diarrhea and dysentery, whenever internal or external pathogens impair the body's metabolic functions, Yin and Yang lose their normal positions, Zang-Fu organs lose their governing roles, and the transmission and transformation duties of the intestines and stomach are neglected, thus causing diarrhea and dysentery.

Dage (obstruction in the chest/diaphragm) and Yie (difficulty swallowing) arise from the Seven Emotions (Joy, Anger, Worry, Thought, Sadness, Fear, Fright) and the Six Excesses, leading to transformations of Fire and Heat flaring upward. This results in Qi rising excessively and descending insufficiently, fluids failing to distribute, accumulating into Phlegm and Fluid Retention, causing vomiting. One must avoid the Six Excesses externally, regulate the Seven Emotions internally, nourish oneself through diet, generate Blood and fluids to moisten the intestines and stomach. Then, Metal will not fear the inflammation of Fire, Kidney Water will have gradual generation, Qi will be clear and Blood harmonious, the Spleen will transport effectively, food will be digested, and transmission will proceed smoothly. However, practitioners typically use pungent, aromatic, dry, and hot herbs. Although Phlegm and Fluids are temporarily劫ed (driven away), providing momentary relief, if emotions remain unregulated and diet is irregular, symptoms recur. Re-administering previous medicines accumulates Heat, consumes Blood and fluids, leading to dryness and withering of the Epigastrium, and constipation with stool resembling sheep pellets, which becomes difficult to treat. I once treated a young man with Fanwei (regurgitation/vomiting after eating) who had not yet reached the stage of epigastric dryness. He would vomit a few mouthfuls after eating but not all of it, making sounds above the diaphragm, while his complexion appeared normal. I determined the disease lay not in the Spleen and Stomach but in the Diaphragm area. Asking about the cause, he explained he consumed fermented grains immediately after a fit of rage. I surmised that extreme anger caused stagnant Blood to accumulate in the upper part, lodging in the diaphragm, obstructing the ascent and descent of Qi. Fluids gathered into Phlegm and Fluid Retention, battling with the Blood, causing movement and sound. I prescribed Erchen Tang (Two-Cured Decoction) augmented with Cyperi Rhizoma (Xiangfu), Allii Tuberosi Juice (Jiuji), and Raphani Semen (Laifuzi). After two days of administration, I induced vomiting using Gouti San (Melon Tendril Powder) combined with Patriniae Herba (Baijiangcao). On the second day of vomiting, one cup of blood was found in the phlegm; on the third day, another cup of blood was expelled upon vomiting, and he recovered.
Another case involved a middle-aged man suffering from pain in the Zhongwan region, vomiting only after eating, with a purplish-frost complexion and choppy pulses at both Guan positions, indicating a Blood disorder. Following a fall, he experienced immediate Zhongwan pain. I administered a formula to promote new Blood formation and eliminate old Blood (stasis). He vomited approximately one bowl of bloody material and recovered.