It can be divided into two stages. The first stage was from the Opium War in 1840 to the eve of the May 4th Movement in19/9, which was the stage of the old democratic revolution. The second stage is from the May 4th Movement in 19 19 to the eve of the founding of People's Republic of China (PRC) in 1949, which is the stage of new-democratic revolution.
Extended data
In modern history, there are two major social contradictions in China: the contradiction between foreign capitalism and the Chinese nation, and the contradiction between feudalism and the masses. The former is the most important contradiction.
However, in the course of history, these two contradictions show a complicated and ups and downs relationship. The two contradictions stipulate that the historical theme of modern China is to overthrow foreign capital-imperialism and get rid of the rule and oppression of feudalism and bureaucratic capitalism.
Strive for national liberation, national prosperity, social progress and people's happiness. In other words, the fundamental task of modern China was to thoroughly oppose imperialism and feudalism, realize national modernization and change the semi-colonial and semi-feudal social nature of modern China.
Baidu Encyclopedia-Modern History of China