Children must be at least 7-8 years old to go to school. If parents send their children to school at the age of 5-6 to encourage them to untie, once the children enter school, all kinds of homework, tutoring and various holiday tuition classes will ruin their childhood. Children's childhood is very important. Have experts analyzed the knowledge related to human brain maturity and what age is appropriate? Personally, I think primary school-high school is the basic course stage. It is to enter colleges and universities to understand the foundation of higher education in the future, and children must not be rigid in their brains and carry a lot of useless things. This is not to say. You have a tough exam, and you are looking for every corner of the book. Can children recite systematically? It is very important to reduce the burden. The point you want your child to know is very important. This is not to say that it is as difficult as implementing policies.