Children like reading, which is a good performance and helpful to learn Chinese well. As for your saying that he can't use it, is it a lack of guidance?

reading comprehension

You can ask your children to tell you what the book says. In fact, it is virtually to exercise his expressive ability and generalization ability, which is actually a kind of reading comprehension.

Knowledge transfer

According to the meaning conveyed in the book, let the children touch the things around them. Is there anything similar, or can you make up a similar thing with the meaning conveyed in the book? Pedagogically speaking, this is the transfer of knowledge. Similarly, the transfer can be positive or negative.

Recite Tang poems

If you are interested, you can recite some wonderful fragments, but I suggest reciting Tang poetry, because it is short and pithy, and it can also improve literary accomplishment.

Timely incentive

From the perspective of educational psychology, timely encouragement is better than blind reinforcement. Otherwise, forcing him to do something he doesn't like is counterproductive and is not conducive to stimulating learning motivation.