1058, Wang Anshi wrote to Song Renzong, demanding a comprehensive reform of the written law since the early Song Dynasty. The famous "Wang Anshi's Reform" reversed the state of poverty and weakness since the early Song Dynasty, and Wang Anshi's famous saying also spread from today, that is, "the weather is not enough to be feared, the ancestors are not enough to learn the law, and people's words are not enough to be kind."

The so-called "the change of nature is not enough for fear" means breaking the superstition of "astronomical phenomena" and no longer using the constancy of natural laws to compare social order; The so-called "ancestors lack the law" is to seek new impetus for social development from the historical experience of the predecessors, rather than completely sticking to and maintaining it; The so-called "people's words are not enough" is a declaration of innovation determination and courage, and it is not shaken by various rumors.