Dad takes a bath with his six-year-old son. The son asked his father why your sparrow has a beard. Why don't I grow a beard? How should a father answer his son?

Dad can tell his son that it is because you are still young and have not developed rapidly. When you grow up, you will grow a beard in a sparrow like your father. The sparrow has a beard because it needs it; Just like a son, you want to eat it because you need it.