C662 A Way to Convince Everyone

Zhang Lili said in confusion, "What, what do you mean by this?"

Zhang Tian said, "That means that the characteristics of a certain type of medicinal herb must be refined according to the weather, time, location, and the atmosphere of a person. For example, if there was a type of herb that was the most active at 1am in the morning, then its medicinal properties would also be the strongest