Pinyin is a kind of learning for children in primary school. Children in kindergarten are not suitable for learning. Children in kindergartens learn knowledge while playing, not by dying. The purpose of those cram schools is nothing more than making money. There are always some parents who have vanity and think that H's children will be smart and have a lot of knowledge when they are so young, but the fact is that forcing children to learn some premature knowledge will increase their burden, and there may be a mentality of being tired of learning in the future, which is not conducive to their growth.