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Astringe the intestines, dry dampness.
The bitter flavor dries dampness, the cold nature overcomes heat, and the astringent property consolidates. Entering the blood level, it stops bleeding. It eliminates old phlegm from the lungs and stomach. It treats diseases caused by damp-heat, such as diarrhea and chronic dysentery, as well as metrorrhagia, leukorrhea, intestinal wind with hematochezia, nocturnal emission, and frequent urination, possessing the efficacy of arresting lower jiao discharge (If qi stagnation in dysentery has not been fully expelled, do not hastily use astringents; forcing consolidation will inevitably transform into other syndromes). To eliminate infantile malnutrition (gan syndrome), Chupi (Cortex Ailanthi) is especially effective (Li Shizhen said: Chunpi enters the blood and qi levels and is astringent; Chupi enters the qi level and promotes free flow. For diseases affecting the blood level with deficiency, Chunpi is suitable; for diseases affecting the qi level with stagnation, Chupi is suitable. In *Qiankun Shengyi*, for treating sores and swelling, Chupi is ground in water, and the juice is taken to induce purgation, which verifies this. Wang Ang notes: Chupi for stopping diarrhea and dysentery is ultimately an astringent agent. Kou Zongshi said: A woman in her forties was addicted to drinking without restraint and ate excessive amounts of fish and crab, causing toxins to accumulate in the zang organs. She suffered from thirty or more bowel movements daily, with pus and blood mixed in the stool, and severe pain from the large intestine to the anus. Medications for bloody dysentery were ineffective, and medications for intestinal wind made it worse, because intestinal wind involves blood but no pus. Taking hot medicines aggravated abdominal pain and bleeding. Taking cold medicines resulted in unrelenting diarrhea and reduced appetite. Taking warm and neutral medicines had little effect, leaving her to await death for over a year. Someone advised taking Renshen San (Ginseng Powder), consisting of one liang each of Chupi and Renshen (Radix Ginseng) powdered, taken on an empty stomach with two qian using warm wine or rice water, and she recovered. Wang Ang notes: This prescription still treats it as dysentery.) The fragrant variety is Chun (Toona sinensis), with firm, reddish-tender flesh, and its shoots are edible; the foul-smelling variety is Chu (Ailanthus altissima), with loose, white flesh, and their main therapeutic effects are roughly the same. Roots growing towards the east are of good quality. Remove the coarse bark, or use after stir-frying with vinegar or honey. Avoid meat and wheat products.

Slippery, benefit orifices.
The sweet flavor is slippery and descending. It enters the Large Intestine, Small Intestine, and Bladder meridians. It circulates through the meridians, benefits various orifices, unblocks urination and defecation, percolates out damp-heat, facilitates childbirth (if the fetus dies in the uterus, taking the juice can expel it), and eliminates tangible stagnant matter from below. It treats five types of strangury (Lin syndrome) with swelling and fullness (*Beiji Fang*: crush into powder, make into porridge, eat; when urination becomes smooth, the condition improves), wheezing, coughing, and insomnia (Ji Kang's *Yangsheng Lun*: Yu Bai Pi induces sleep), treats tinea, alopecia, and sores, reduces red swelling and engorged breasts (Du Ru syndrome: breast abscess where milk does not flow out, internally forming a lump. Mix with residue of aged vinegar, change application six to seven times daily for effectiveness. *Shi Ji* states: Slippery methods remove adherence; Dong Kui Zi (Semen Malvae) and Yu Bai Pi (Cortex Ulmi) belong to this category.). There are red and white varieties. Remove the coarse bark and use the white part (Harvest the bark, grind into flour, and it can serve as food in famine years. Used in spice preparations for blending, its slipperiness surpasses glue and lacquer).