It is suggested that mulberry is the mature fruit of mulberry, a deciduous tree of Moraceae. Mulberry is also called mulberry and jujube. Farmers like to eat its ripe fresh fruit, which tastes sweet and juicy. It is one of the fruits that people often eat.
Mystery: Turn red when you are young, and wear purple HongLing when you are old. (knocking a plant)
Answer: Mulberry