Guardian. The Republic mainly discusses the cultivation of guardians in the Republic from three aspects: preschool education, music, literature and art education, physical education and basic quality requirements. According to the relevant public information, The Republic is rich in content, involving education, culture, politics, art, ethics and other aspects of knowledge, among which ideas about preschool education, women's education, music and literature education, physical education, military education and so on have had an important impact on the education of ancient Greece and later generations.