From the end of the Spring and Autumn Period to the Opium War, China has been in an imperial society for more than two thousand years. In imperialist society, a few landlords own most of the land, while farmers have little or no land. Politically, the landlord class monarchy was implemented, the emperor had supreme power, established a huge bureaucratic system with landlords and gentlemen as the backbone, and exercised cruel rule over the people. The peasants have no right to participate in and discuss state affairs, but only the obligation to obey. The contradiction between the peasants and the landlord class is the main contradiction in imperial society. In order to resist the economic exploitation and political oppression of the landlord class, farmers held hundreds of armed uprisings. The scale of peasant uprising and peasant war in the history of China is rare in the history of the world.