1. Primitive social period: ① Primitive society in China ended in Yu period; (2) the slave society in China began in 2 1 century BC.
2. Xia, Shang and Zhou Dynasties were the period of the formation, development and prosperity of slave society in China.
3. The Spring and Autumn Period and the Warring States Period were the period when the slave society disintegrated and the feudal society formed.
The second stage: Qin and Han Dynasties (22 BC1to 220 AD) was the foundation stone period of the first feudal unified multi-ethnic country.
The third stage: Wei, Jin, Southern and Northern Dynasties (220-589) was a period of division of feudal countries and great ethnic integration.