Why is it called Qinglong soup and Baihu soup?

East Qinglong, North Xuanwu, South Suzaku and West White Tiger.

East Qinglong corresponds to the five elements of wood, spring and main hair growth, Qinglong decoction perspires, and Xiaoqinglong decoction treats cold water and dragon water.

West White Tiger corresponds to autumn, which is cool and destroys summer heat, so this pair of heat-clearing drugs is called White Tiger Decoction, which is basically the way it is.