The reason why private schools were closed in the Qin Dynasty was that Qin Shihuang adopted the advice of Prime Minister Lisi and implemented the educational policy of "taking law as teaching and officials as teachers", which made private schools no longer recognized and needed. In the Qin Dynasty's "burning books to bury Confucianism" incident, the possession of books and private schools was regarded as illegal, which further strengthened the Qin Dynasty's attack on private schools. After the implementation of these policies, folk academic teaching was banned as an illegal activity, which caused great damage to education.