1. The main treatment of Tongcao. Tongcao can clear away heat, diuresis, ventilate and release breast milk. It is used to treat conditions such as damp heat, red urine, gonorrhea, astringent pain, edema and oliguria, lactation problems, amenorrhea and leucorrhea. Just take 3 to 5 grams of it and decoct it. Its nature and flavor are sweet and slightly cold, and it belongs to the lung and stomach meridians. It is used when there is internal dampness and heat, short red urine or astringent and painful discharge. Because the smell is thin and the effect is relatively slow and weak, you can choose to decoct it with Akebia and talc; if it is to treat damp and warm diseases, you can mix it with Kumquat. Kernels, bamboo leaves, etc. can be used together; if the milk is scarce, Tongcao can be decoctioned with pig's trotters, licorice, etc. 2. If you have edema, you can use equal amounts of Tongcao and Wooden Pigweed. Grind it into powder, add a little bit of ground dragonfly and musk, and fry it for half a penny or a penny each time. If you have typhoid fever, After vomiting, you can also mix three ounces of Tongcao, one liter of raw reed root, one ounce of orange peel, and three liters of japonica rice, and boil it to two liters with five liters of water. 3. Tongcao can also treat nasal congestion. When the breath is blocked and you can't smell anything, you can grind equal parts of Tongcao, Asarum and Aconite into a powder, mix it with honey, wrap it in a cloth and stuff it into your nose. "Compendium" describes Tongcao as follows: Tongcao is white in color, cold in air, light in taste and light in body, so it enters the Taiyin lung meridian, induces heat to decrease and facilitates urination; it enters the Yangming stomach meridian, ventilates the upper part and lowers the milk; its Qi Cold, descending, its taste is light, opening. It can be seen that Tongcao was discovered and taken as a medicine a long time ago and has a lot of medicinal value.