The Eastern Zhou Period (711-221BC)
a) Spring and Autumn Period (771-481 BC)
About 771 BC, the Zhou leaders were forced eastward out of their previous strongholds near Mount Qi and into a reduced area near their capital city of Luoyang. This period is also called the Spring and Autumn Period (Chunqiu), after a history of that name which documented the Eastern Zhou dynasties. The Eastern Zhou rulers were autocratic, with a centralized administration and a ranked bureaucracy. Taxation and corvee labor were present.
b) Warring States (481-221 BC)
About 481 BC, the Zhou Dynasty split up into separate kingdoms, the Wei, Han and Zhao kingdoms. During this period, iron working became available, the standard of living rose and the population grew. Currency was established enabling far-flung trading systems. China was entering feudal society in the period of time. The Warring States period ended when the Qin dynasty reunited China in 221 BC.