The pre-Qin period, including primitive society, Xia, Shang, Western Zhou and Eastern Zhou (Spring and Autumn and Warring States), experienced three social forms. It involves the emergence, development and disintegration of primitive society, the formation (Xia), development (Shang) and peak (Western Zhou) and disintegration (Spring and Autumn) of slave society, and the establishment of feudal society (Warring States). The transition from slavery to feudalism. The development of productive forces is the fundamental reason for the evolution of social forms.

2. Qin and Han Dynasties (2265438 BC+0-220 AD)

Qin and Han dynasties were the "great unification" period that ended the melee in the Spring and Autumn Period and the Warring States Period. The stage characteristics of this period are the historical period of the formation and initial development of feudal society, and also the period of social politics from chaos to governance, and social economy from stagnation to initial recovery and development.

3. The Three Kingdoms, the Jin Dynasty and the Southern and Northern Dynasties (220 ~ 589)

The Three Kingdoms, the Jin Dynasty and the Southern and Northern Dynasties inherited the prosperity of the Qin and Han Dynasties, which laid the foundation for the overall prosperity of the Sui and Tang Dynasties, so it was a transitional stage between the two heydays. The historical characteristics of this period are the great division of feudal countries and the great integration of nationalities, and it is also a historical period when Jiangnan developed its economy and began to catch up with the north.

4. Sui and Tang Dynasties (58 1 year ~ 907)

The Sui and Tang Dynasties were the heyday of China's feudal society, and the stage characteristics of this period were: national unity and relatively stable political situation; The feudal economy continued to develop, showing a prosperous scene; The ties between ethnic groups have been strengthened and a unified multi-ethnic country has been further developed; Opening to the outside world, frequent economic and cultural exchanges between China and foreign countries; Science, technology and culture are leading the world, and they are all brilliant.

5. Liao, Song, Xia, Jin and Yuan Dynasties (907 ~ 1368)

The stage characteristics of Liao, Song, Xia, Jin and Yuan Dynasties in the Five Dynasties are the continuous development of feudal economy and the further strengthening of national integration. From the separatist regime, several ethnic regimes coexist and gradually move towards unity.

6. Ming and Qing Dynasties (1368 ~ 1840, before the Opium War)

The absolute monarchy has been strengthened unprecedentedly. In the early Ming Dynasty, the prime minister was abolished, the imperial power, factory guards and secret agents were strengthened, and stereotyped writing was adopted. The local waste province has three divisions, and the metropolitan government has been changed to Wudu government. The addition of the Ministry of War and Daxing Literary Prison in Qing Dynasty strengthened the autocratic monarchy, but also exposed the decay of feudal system, indicating that the Chinese system was gradually declining.