"Importance" means that it is the foundation period of a person's development, and many important abilities and personality qualities form basic characteristics during this period;
"Special" means that this stage is the transition period of children's physical and mental development from the initial amorphous to the basic stereotypes, and then they can start learning and developing according to social needs. When children's minds are not yet mature, the best educational method to cultivate children to do things and be human is to cultivate children's good habits. Through the cultivation of habits, behavior will be internalized into children's quality.