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Whenever sweating originates from the Yin aspect, if the Yang Qi harmonizes, the heat resolves. However, when sweating arises due to mutual rejection (Ge Ju) between Yin and Yang, the heat persists while Yang Qi becomes deficient, failing to distribute to the hands and feet, resulting in persistent cold extremities (Jue); this indicates a fatal prognosis. Similarly, fever accompanied by incessant sweating is also fatal. If these two conditions occur simultaneously, there may still be a chance for treatment, as the cold extremities have not yet reached the stage of Yang exhaustion, and the sweating has not yet led to Yin collapse. The theoretical explanation for this can be found in *Jie Ming Li Lun* (Theory Explained). Nevertheless, further clarification is warranted: The heat of Fuzi (Aconiti Lateralis Radix Praeparata) is mobile and unceasing, circulating through the meridians from the interior to the exterior, reaching the hands and feet; it is used to stop sweating and treat cold extremities. The heat of Ganjiang (Zingiberis Rhizoma) is stationary and non-mobile, guarding the interior organs, aiding digestion, nourishing righteous Qi, warming and tonifying Middle Jiao Qi, thereby harmonizing Yin and Yang and resolving mutual rejection. One must carefully balance the "mobile" nature of Fuzi and the "stationary" nature of Ganjiang to apply them appropriately.

For diarrhea accompanied by lung pain, Zishen Tang (Purple Ginseng Decoction) is the primary formula.
**Zishen Tang Formula**
Zishen (Radix Periplocae or similar, 8 liang)
Gancao (Licorice Root, 3 liang)
Take the above two ingredients, add five sheng of water, first decoct Zishen until two sheng remain, then add Gancao, and decoct until one and a half sheng remains. Divide into three warm doses.
*Yanyi Commentary*: Diarrhea is a disease of the intestines and stomach; why is it said to involve the Lung? This is because the Large Intestine and Lung are internally-externally related. Generally, accumulation in the intestines impedes Lung Qi circulation; accumulation in the lungs causes the Large Intestine to lose its firmness. These two pathologies affect each other. When the Large Intestine is diseased, Qi stagnation obstructs the Lung causing pain; accumulation in the lungs also causes pain. The treatment principle for pain is general. Zishen is recorded in Materia Medica as treating abdominal accumulations and clearing heat accumulation in the intestines and stomach, opening the nine orifices, and promoting bowel movement. It removes old stagnation and opens the pathways. Gancao is added to harmonize the interior and exterior. When Qi flows freely, recovery occurs; when stagnation is removed, diarrhea stops. The annotation notes that this is not originally from Zhang Zhongjing's formulas, as Zishen was not commonly used by him.

For Qi-type diarrhea (stool passing with flatus), Helile San (Areca Nut Shell Powder) is the primary formula.
**Helile Formula**
Helile (Pericarpium Arecae, ten pieces, roasted)
Grind the single ingredient into a powder. Mix with rice broth and take in one dose.
*Yanyi Commentary*: Treatment varies in severity. The previously mentioned Qi-type diarrhea primarily involved regulating urination; this Qi-type diarrhea involves regulating defecation. Wherever Qi is knotted, the Yin and Yang differ. These two cases serve as examples: all six channels can experience Qi knotting leading to diarrhea, each having distinct Yin-Yang characteristics. Helile possesses both purgative and astringent properties. Its purgative action descends phlegm, digests retained food, and breaks Qi knots; its astringent action secures the intestine against prolapse. Rice broth is added to guide the medicine into the intestines and stomach and to tonify deficiency.