It's reed root. Formula proportion and preparation method: Sangen decoction: reed rhizome 30g, cogongrass rhizome 30g, kudzu root 15g. This is the amount of a medicine. Soak it in cold water for 30 minutes, then boil it with low fire for 15 minutes, and the dried baby can drink some honey. This soup can be used as water for babies to drink at ordinary times. In fact, you can also put rock sugar. Be sure to use stainless steel pot or casserole, those in aluminum pot won't work ~

Also, you must not eat Fritillaria cirrhosa in the early stage of cold and cough. Fritillaria cirrhosa is a tonic and is suitable for lung diseases such as whooping cough and tuberculosis.