Xia Hou is a Chinese medicine term, which refers to a method of decocting medicine. Some medicines should be ineffective if they are boiled for a long time, so wait until other medicines are boiled quickly. For example, fragrant medicines such as mint, Akebia Akebia, Pogostemon, Amomum villosum, Uncaria rhynchophylla, cardamom, almond and so on. If the decoction time is too long, it will be ineffective because of the volatilization of effective components. If one tablet needs to be decocted twice, the next tablet should be put in five minutes before the first decoction, and the second decoction is no different from the next tablet.

Of course, after the first decoction, or after the first decoction, it will become another prescription.