1. Primitive society: established from Paleolithic to Xia Dynasty (hundreds of thousands of years ago-2046 BC).

2. Slave society: The Xia Dynasty was established until the end of the Spring and Autumn Period (2046- 476 BC).

3. Feudal society: Opium War from the early Warring States to 1840 (475 BC-A.D. 1840).

4. Semi-colonial and semi-feudal society: from the Opium War to the founding of New China (1840- 1949).

5. Socialist society (including new democratic society): 1949 Since the founding of New China.

The change of social form in China has more complicated historical movement and development characteristics. Due to complicated social and historical conditions, such as the semi-feudal and semi-colonial society in old China, it is an atypical social form. China's social development pattern changes from low level to high level in turn, showing primitive society, slave society, feudal society, semi-colonial and semi-feudal society and socialist society. The historical development of all ethnic groups in China is unified, and the historical development process of all ethnic groups has only one sequence. Marxist theory of socio-economic formation reveals the commonness of China's historical development.