The history of modern war can be divided into two stages: the first stage is from the Opium War of 1840 to the eve of the May 4th Movement of 19 19, which is 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.

/kloc-The outbreak of the Opium War in 0/840 was a historical turning point in China's transformation from a feudal society to a semi-colonial and semi-feudal society, and it was the beginning of modern history in China.

The following hundred years, marked by the May 4th Movement of 19 19, were divided into two periods: the former was the old democratic revolution period and the latter was the new democratic revolution period, but both of them belonged to the bourgeois revolution category.

The system can be divided into: Opium War, Taiping Heavenly Kingdom War, Second Opium War, Heaven and Earth Uprising War, Sino-French War, Sino-Japanese War, Eight-Nation Alliance Aggression War, Xinhai Revolution, etc.

Extended information: The modern history of China is the history from the First Opium War (1840) to the relocation of Nanjing Kuomintang regime to Taiwan Province Province and the founding of People's Republic of China (PRC) (1949). The semi-colonial and semi-feudal society in China gradually formed and disintegrated after the late Qing Dynasty, the provisional government of the Republic of China, the northern warlords and the national government.

The modern history of China is a history of humiliation full of disasters, backwardness and beatings, a history of China people's exploration of saving the country and realizing freedom and democracy, and a history of China people's struggle against aggression, overthrowing imperialism and realizing national liberation and feudalism and people's prosperity.

Reference: Baidu Encyclopedia-Modern History of China