Chinese Mathematics is suitable for children aged nine and above. Hua's mathematics belongs to a kind of Olympic mathematics. In the early years, some parents were crazy about learning Olympic Mathematics, and the government had to issue a ban on Olympic Mathematics. According to children's physical and mental health development and intellectual development level, children should not learn Chinese mathematics earlier than the third grade of primary school, that is, it is most appropriate for children to learn Olympic Mathematics after the age of nine. Don't study the Olympics too early, it will be counterproductive.