The boiling time for different types of Chinese medicines is different. Usually, the antidepressants and heat-clearing medicines are boiled and simmered for 3 to 5 minutes, and the tonic medicines are boiled and simmered for 30 to 60 minutes. 1. Exopathogens, heat-clearing medicines: most of these medicines are pungent and light, and are not recommended to be boiled for a long time. Generally, they are first decocted over a high flame, and after boiling, they are then decocted for 3 to 5 minutes. 2. tonic medicine: most of these medicines are nourishing and greasy, and need to be boiled for a longer period of time in order to exert their medicinal effects. Generally, the first slow decoction with a gentle fire, after boiling, then continue to decoct for 30 to 60 minutes. Certain medicines need to be decocted separately in advance due to their different texture or toxicity, such as epiphyllum, oyster, magnetite, etc. The specific decoction is subject to the doctor’s instructions.