Spring and Autumn Period-Slave Owner Class
Warring States period-a new landlord class
Qin dynasty-Qing dynasty (feudal society period)-landlord class
Republic of China (Sun Yat-sen) —— Bourgeois revolutionaries
During the reign of Northern Warlords-comprador bourgeoisie
The period of Kuomintang rule-bureaucratic bourgeoisie
People's Republic of China (PRC)-the proletariat