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Wan Dou (Pisum sativum), also known as Han Dou, is a name for Hu Dou. Its taste is sweet and neutral, non-toxic. It enters the Spleen and Stomach meridians. It is a substance that clears heat and promotes urination to remove damp-heat. Boiled and eaten, it treats Xiao Ke (wasting-thirst syndrome), abdominal distension and fullness, promotes diuresis, treats alternating chills and fever, internal heat, vomiting, regurgitation, diarrhea, and dysentery. It can also miraculously treat Ding (carbuncle) in smallpox lesions; therefore, it is used in Si Sheng Dan (Four Holy Elixir) by Censor Niu. Whenever children have Ding in their smallpox lesions, whether purple-black and large, or blackened and rotting with a foul odor, or having a purple line in the center, this condition results in death in eight or nine out of ten cases. Only this prescription applied topically is most effective. Use 49 grains of Wan Dou (Pisum sativum), calcined to retain its medicinal properties (Cun Xing), mixed with 3 fen of human hair and 14 grains of Zhen Zhu (Pearl), ground into powder. Mix with You Yan Zhi (Oil Carmine), pound into a paste. First, pierce the Ding with a hairpin, suck out the bad blood, then apply a small amount of the paste. The lesion will immediately turn red and vibrant. Wan Dou Mian (Pea flour) is used for bathing the head and face; its white and fine texture removes dirt and makes the skin lustrous. Can Dou (Vicia faba), tastes sweet and slightly pungent, non-toxic. It thickens the intestines and stomach, harmonizes the Zang-Fu organs. In the past, a young woman accidentally swallowed a needle into her abdomen, and physicians could not cure her. Someone instructed her to boil Can Dou (Vicia faba) and eat it with Chinese chives; the needle was naturally excreted with the stool. Nowadays, if someone accidentally swallows gold, silver, or other objects, using this method is effective.

Wan Dou (Pisum sativum) regulates Ying and Wei (Nutritive and Defensive Qi), benefits the Middle Jiao, and harmonizes Qi. However, excessive consumption may induce Phlegm due to Qi stagnation. In the Yuan Dynasty, it was boiled and eaten with mutton meat, taking advantage of its ability to tonify the Middle and benefit Qi. Can Dou (Vicia faba) primarily opens the stomach and benefits the Five Zang organs. An ancient case involved a woman who swallowed a needle; after eating Can Dou (Vicia faba) with Chinese chives, the needle was expelled via defecation, demonstrating its ability to promote the flow of the Zang-Fu organs. Note that it may induce Qi stagnation. Its husk is grayish and is highly effective when applied to Tian Pao Chuang (Blistering sores).

Main Indications (Referencing *Dou Zhen He Can*): Wan Dou (Pisum sativum) can detoxify, thus it is used in treating smallpox to extract Ding toxicity.

Wan Dou (Pisum sativum) inherits the balanced Qi of Earth. Its taste is sweet and aroma fragrant, nature is warm, non-toxic. It enters the Qi aspect of the Foot Taiyin Spleen Meridian and Foot Yangming Stomach Meridian. It unblocks and benefits the San Jiao (Triple Burner), raises the clear and descends the turbid, thus specializing in treating diseases of the Middle Palace (Spleen/Stomach). It harmonizes the middle, directs rebellious Qi downward, dispels summerheat, detoxifies, awakens the Spleen, and resolves dampness. It treats Huo Luan (Cholera-like syndrome with vomiting and diarrhea), resolves alcohol and pufferfish poison. Long-term consumption tonifies the Five Zang organs, prevents premature graying of hair, and treats leukorrhea and metrorrhagia in women. The leaves have the same flavor and aroma, and mainly treat muscle spasms and Huo Luan. The flowers, when dried and ground into powder, taken with rice water (2 qian), miraculously treat persistent metrorrhagia. There are purple and white flowers, and black and white beans; for medicinal use, purple-flowered white beans are superior. Beans that are black or purple are named Que Dou (Magpie Beans) and are not used medicinally.

Bai Bian Dou (Lablab Bean), expels summerheat, clears damp-heat, awakens the Spleen's primal Qi, treats Huo Luan and harmonizes the middle, directs Qi downward and stops diarrhea, assists in raising the clear and descending the turbid, unblocks and regulates the San Jiao, resolves various toxins, and treats leukorrhea.

Main Indications (Referencing *Dou Zhen He Can*): Used raw, it clears summerheat and nourishes the Stomach; stir-fried, it strengthens the Spleen and stops diarrhea.