Duchan is a dry tree bark of a plant, which is connected to a thin radish, which is warm; it is well suited for symptoms such as regular back pains and rheumatism, which can be used to regenerate the liver and kidneys with strong bones, but is not suitable for use by the fiery ones. The good soup tastes like a mild meds. It tastes good, and if you don't get used to it, you can add a few dates. Duchang is also suitable for high blood pressure and can balance blood pressure in the human body; strengthen human cells and immune functions, break up cholesterol within the body and remove toxins from the body. It's good to make soup together, but it's also good to treat the back pains and the strong hysteria. Neither of them is suitable for consumption by a person who is not fit to eat, such as a person who is hot, cannot sleep, or a person who is not fit to drink. However, it is very helpful for women to have this soup one week after the end of their menstruation, because some women suffer from pain in their waists during menstruation, so that the soup is suitable for eating during the period。