1, Opium War, treaty of nanking and other first batch of unequal treaties were signed-it began to become a semi-colonial and semi-feudal society.

After the Opium War, the western powers led by Britain forced the Qing government to sign the treaty of nanking, the Five-Port Trade Charter, the Humen Treaty, the Wang Xia Treaty and the Huangpu Treaty. The signing of this series of unequal treaties has had a great impact on China society. ?

2. The Second Opium War and the signing of Tianjin Treaty and Beijing Treaty deepened the semi-colonial and semi-feudal society.

During the Second Opium War, Russia, the United States, Britain, France and Britain forced the Qing government to sign a series of unequal treaties, such as the Tianjin Treaty and the Beijing Treaty, which deepened the semi-colonial and semi-feudal degree of China. ?

3. The Sino-Japanese War and the signing of treaty of shimonoseki greatly deepened the semi-colonial and semi-feudal society.

In the Sino-Japanese War of 1894- 1895, China was defeated and forced to sign the treaty of shimonoseki with Japan, which humiliated the country. The signing of treaty of shimonoseki brought serious harm to modern China. ?

4. Eight-Nation Alliance's war of aggression against China and the signing of the "Xin Chou Treaty"-completely reduced to a semi-colonial and semi-feudal society.

1900 Eight-Nation Alliance's war of aggression against China, China was defeated again, and was forced to sign the "Xin Chou Treaty" with Britain, Russia, Germany, France and other countries, which brought extremely serious harm to China.

Extended data:

China's feudalism and imperialist aggression colluded with each other, which was the most reactionary and decadent force in modern China and became the social foundation of imperialist rule and enslavement of China.

The invasion of imperialist powers destroyed the natural economic foundation of feudal self-sufficiency, but the foundation of feudal exploitation system not only still existed, but also combined with the exploitation of comprador capital and usury capital, which occupied a significant advantage in China's social and economic life and became the most important economic form in modern China.

Although modern Chinese national capitalism developed, it never became the main economic form of China society. As China is a semi-colonial country ruled indirectly by several imperialists, the imperialist powers divide their spheres of influence in China and implement the policy of divide and rule, which makes China's political, economic and cultural development extremely unbalanced.

The broad masses in China, especially the broad masses of workers and peasants, are not only oppressed by imperialism and feudalism, but also exploited and oppressed by the bureaucratic comprador bourgeoisie. They live a cold and hungry life and have no political rights. The poverty and unfriendliness of the people of China are rare in the world.