Protecting children's authenticity is based on Mencius' theory of good nature. Yang Yi, a writer in the Northern Song Dynasty, clearly pointed out in his book Family Instructions: "Childishness does not stop at memorizing"; It is to "improve their good knowledge and ability."

The so-called good knowledge and ability is to believe that children are born with the instinct to be good. The purpose of education for the ignorant is to maintain this instinct, so that it will not be invaded by acquired material desires and lose its true colors.