This is a wiki copy and paste but it gets the idea across. More or less.
Spring and Autumn Period (722–476 BC)
Main article: Spring and Autumn period
Capitals: of the State of Yan, Beijing; of the State of Qin, Xi'an In the 8th century BC, power became decentralized during the Spring and Autumn period, named after the influential Spring and Autumn Annals. In this period, local military leaders used by the Zhou began to assert their power and vie for hegemony. The situation was aggravated by the invasion of other peoples from the northwest, such as the Qin, forcing the Zhou to move their capital east to Luoyang. This marks the second major phase of the Zhou dynasty: the Eastern Zhou. The Spring and Autumn Period is marked by a falling apart of the central Zhou power. In each of the hundreds of states that eventually arose, local strongmen held most of the political power and continued their subservience to the Zhou kings in name only. Some local leaders even started using royal titles for themselves. China now consisted of hundreds of states, some of them only as large as a village with a fort.
The Hundred Schools of Thought of Chinese philosophy blossomed during this period, and such influential intellectual movements as Confucianism, Taoism, Legalism and Mohism were founded, partly in response to the changing political world.
Warring States Period (476–221 BC)
Several capitals, due to there being multiple states After further political consolidation, seven prominent states remained by the end of 5th century BC, and the years in which these few states battled each other are known as the Warring States Period. Though there remained a nominal Zhou king until 256 BC, he was largely a figurehead and held little real power.
As neighboring territories of these warring states, including areas of modern Sichuan and Liaoning, were annexed, they were governed under the new local administrative system of commandery and prefecture (郡縣/郡县). This system had been in use since the Spring and Autumn Period, and parts can still be seen in the modern system of Sheng & Xian (province and county, 省縣/省县).
The final expansion in this period began during the reign of Ying Zheng, the king of Qin. His unification of the other six powers, and further annexations in the modern regions of Zhejiang, Fujian, Guangdong and Guangxi in 214 BC, enabled him to proclaim himself the First Emperor (Qin Shi Huang).