Key Facts
- Duration
- c. 1030–223 BC
- First ruler
- King Wu of Chu (early 8th century BC)
- Capitals
- Danyang (early), then Ying
- Core territory
- Modern Hubei, Hunan, and surrounding provinces
- End
- Annexed by Qin in 223 BC
Imperial Zenith Metrics
Historical Trajectory
Phase I: Rise
Chu emerged as a state in the southern reaches of the Zhou domain, traditionally traced to the early Western Zhou period. Its rulers bore the Mi/Nai surname and Xiong lineage name. By the early 8th century BC, King Wu of Chu adopted the royal title, asserting independence from Zhou overlordship. Chu expanded steadily southward and eastward, absorbing neighboring polities and establishing control over the middle Yangtze River region.
Phase II: Zenith
At its height during the Spring and Autumn and Warring States periods, Chu encompassed much of present-day Hubei, Hunan, and adjacent regions, making it one of the largest states in ancient China. Its capital Ying became a center of distinctive southern Chinese culture, including the lyric poetry tradition associated with Qu Yuan. Chu's military power and territorial breadth made it a dominant force among the competing Zhou-era states.
Phase III: Decline
During the late Warring States period, Chu faced sustained military pressure from the rising state of Qin. A series of defeats eroded its territory and weakened its ruling house. Despite resistance, Qin generals launched decisive campaigns that overran Chu's remaining strongholds. In 223 BC, Qin forces completed the conquest, absorbing Chu into the expanding Qin empire, which would unify all of China within two years.
Notable Imperial Reigns
Selected rulers mapping the empire’s trajectory