It initiated and led the bourgeois democratic revolution, put an end to China's feudal autocracy, pushed aside the semi-colonial and semi-feudal society in modern China, and made China a modern country. It is different from the feudal society before the Opium War and the general capitalist society. 1892 In July, Sun Yat-sen graduated from Hong Kong College of Western Medicine with the highest score, and practiced medicine in Macau and Guangzhou successively. He has a good medical skill and treats poor patients for free. Therefore, his medical practice "became famous within two or three months". 1June, 894, Sun Yat-sen wrote to Li Hongzhang in Tianjin, demanding the reform of current politics, but no one paid attention to it. In the same year, the Sino-Japanese War broke out, and the Qing government failed in succession in the war. Sun Yat-sen further recognized the corruption and incompetence of the Qing Dynasty and strengthened his belief in saving the country. He went to Honolulu to publicize the revolution to overseas Chinese. In the ideological and cultural field, extensive and profound enlightenment has promoted the modernization of people's ideas, and the ideas of democracy, civil rights, freedom and equality have been deeply rooted in people's hearts. In addition, the New Culture Movement later brought China's cultural modernization to a new stage.