Yin Chen can be washed of surface dust to make tea. Yin Chen has the effect of diuretic (dredging the biliary tract to eliminate jaundice), clearing dampness-heat (removing heat and dampness in the body), and can be used to treat jaundice and urination, dampness-warmth (warmth caused by feeling dampness-heat), summer dampness, and itchy wet sores, and other diseases. Yin Chen can be used to make tea directly after washing the surface dust, but the efficacy of the medicine played by the tea is limited, so you can’t use Yin Chen to make tea instead of medicine to treat diseases. Note that the people who are allergic to Yin Chen are prohibited from taking it, and those who have blood deficiency and yellowing, and those who have yellowing blood storage need to use Yin Chen with caution. If Yin Chen has deteriorated, such as rotting, mold, etc., then it should be stopped immediately. In addition, it should not be used in large doses, so as not to produce a certain degree of gastrointestinal tract irritation, or even adverse reactions. If you need to use the use of chennai to treat the disease, you need to go through a professional doctor’s diagnosis, follow the doctor’s instructions to take the drug, do not blindly use their own medication.