Sophora japonica is divided into Sophora japonica and Sophora japonica (also called Robinia pseudoacacia), both of which will bear pods. Sophora japonica blooms yellow-green in early summer, and Sophora japonica blooms white in spring.
The pods of Sophora japonica can be steamed into a kind of medicine that can soak in water after falling leaves in winter and naturally drying on trees, which has the effect of cooling down and reducing fever. People in the north call it "Huai Lian Dun", but now only some rural areas know how to do it.