3-6 years old is the first critical period of children's EQ education, also called mud period, which is a period to cultivate children's self-confidence, emotional management and interpersonal skills.

7- 12 years old is the second critical period of children's emotional intelligence education, also called porcelain period. Whether children will have residual porcelain and exquisite porcelain in the future depends on whether they have received professional and systematic education, especially emotional intelligence education.

If parents don't know how to train their children systematically, they can search online for courses related to "parent-child EQ trainer".