According to the age of children and the conditions and standards for accepting students in primary schools and kindergartens, we should seek truth from facts, and we should not pull out seedlings to promote quick success and instant benefit, nor should we delay or lag artificially, otherwise it will affect the normal physical and mental development of children. When a child is six and a half years old, it is time to go to primary school; Children over 4 years old should go to kindergarten middle class.