Preschool teachers are also a very noble cause. They started with dolls and tried to enlighten children. Preschool teachers actually practice teachers' professional ethics everywhere in education and teaching activities. For children who can't stand on their own feet, we should care for children from the aspects of food, clothing, housing and transportation, and show professional virtues everywhere. Children engage in various teaching activities to cultivate their self-care ability. When they are in trouble, they don't beat their children to eat.