Parents are guardians of their children and have the right to read their books. The starting point is good, the book is probably not private, and it is not illegal to read it. In order to live a warmer life for each other and for the children's privacy, try to turn over the diary as little as possible and keep a little children's personal privacy.

Everyone has the right to privacy, including children. It is an invasion of children's privacy for parents to rummage in their children's rooms, but this situation is generally not considered illegal. However, this situation is generally due to the good intentions of parents, so if parents want to know the dynamics of their children, they should talk more and communicate more. If you have more opportunities, you will learn something.