The first point:
This involves the cultivation of basic ability of logical thinking. For example, children's favorite games should be guided by logical games as much as possible, such as Tetris, rather than other pure entertainment games. This can be guided by children's playful nature. .
The second point:
The most important thing is to remember that a good boy is bragging.
When you think about yourself, your strengths will always be something you have been proud of since you were a child.
This is human nature. I don't know if you understand psychological hints.
When you always hint that you are a strong point in a certain field, it really becomes a strong point over time.
Use a lot of positive psychological hints, and sometimes pretend to be surprised to praise the child for doing a good job on a topic, which makes him proud.
Slowly, you will find surprises.