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Water and dampness infiltrate the stomach. This is termed Yi Yin (Overflowing Drink). It presents with slippery diarrhea, thirst capable of drinking water, but after drinking, diarrhea recurs immediately; following diarrhea, extreme thirst occurs. This condition is considered to have no medicinal indication for treatment; moxibustion on Dazhui (GV14) should be performed instead.

Dazhui (GV14), also known as Dazhui, is located in the depression below the first thoracic vertebra. It is the meeting point of the Hand and Foot Three Yang meridians and the Du Meridian. Needle depth: 5 fen; retain needle for three "hu" (breaths); reduce method: five "xi" (breaths). For moxibustion, the number of cones corresponds to the patient's age in years.

The *Neijing* states: "When dampness prevails, it leads to Ru Xie (Soggy Diarrhea)." The *Jia Yi Jing* states: "When cold qi lodges in the lower jiao, it transmits into Ru Xie." The Spleen is the most yin organ among the five zang organs; its nature dislikes cold and dampness. Now, when cold-damp qi internally invades the spleen, it fails to assist Stomach qi in rotting and ripening food and drink. Consequently, clear and turbid substances are not separated; water enters the intestines, and deficiency prevents control, resulting in Dong Xie (Cavernous Diarrhea) flowing like water, descending with qi, which is called Ru Xie. The therapeutic method should be to eliminate dampness and promote urination. Dui Jin Yin Zi (Golden Mirror Drink) is the principal formula.

[Dui Jin Yin Zi]
Ping Wei San (Wu Wei Powder) (5 qian)
Wu Ling San (Five-Ingredient Powder with Poria) (2.5 qian)
Caodoukou (Tsaiko Fructus) (wrapped in flour and roasted, 5 qian)
Mix the above ingredients to make four doses. For each dose, use 1.5 liang of water, 3 slices of ginger, and 2 dates. Decoct until 1 liang remains, strain, and take warm before meals. (In July in Shangdu, Chancellor Shi suffered from this illness and was cured after taking three doses.)

The *Neijing* states: "When clear qi descends below, it generates Sun Xie (Undigested Food Diarrhea)." It also says: "When wind lingers in the stomach, it becomes Chang Feng Sun Xie (Intestinal Wind Undigested Food Diarrhea)." The Spleen and Stomach belong to Earth; their qi is harmonious and centered on transformation and transportation. Now, if clear qi descends rather than ascends, wind pathogen lingers and harasses the Stomach for a long time; this is Wood overacting on Earth. Therefore, the harmonious qi cannot transform, causing undigested food to be excreted intact, which is called Sun Xie. Alternatively, excessive diet may injure the intestines and stomach, also leading to undigested rice and grain. This is colloquially known as Shui Gu Li (Water and Grain Diarrhea). The therapeutic method should be to lift the sinking qi and digest/accumulate. Jia Jian Mu Xiang San (Modified Costus Root Powder) is the principal formula.

[Jia Jian Mu Xiang San]
Muxiang (Costi Radix)
Liangjiang (Alpiniae Officinarum Rhizoma)
Shengma (Cimicifugae Rhizoma) (remove decay)
Renshen (Ginseng Radix) (remove rhizome)
Binglang (Arecae Semen) (each 2.5 qian)
Shenqu (Massa Medicata Fermentata) (stir-fried, 2 qian)
Roudoukou (Myristicae Semen)
Wuzhuyu (Evodiae Fructus) (soaked)
Suosharen (Amomi Fructus Rotundus)
Ganjiang (Zingiberis Rhizoma) (processed)
Chenpi (Citri Reticulatae Pericarpium) (each 0.5 qian)
Grind the above eleven herbs into coarse powder. Each dose is 4 qian, decocted in 1.5 liang of water until 1 liang remains, strain, and take warm before meals. It is advisable to add Baizhu (Atractylodis Macrocephalae Rhizoma).