The Spring and Autumn period (c. 770 – c. 481 BCE) was a period in Chinese history corresponding roughly to the first half of the Eastern Zhou (c. 771 – 256 BCE), characterized by the gradual erosion of royal power as local lords nominally subject to the Zhou exercised increasing political autonomy. The period's name derives from the Spring and Autumn Annals, a chronicle of the state of Lu between 722 and 481 BCE, which tradition associates with Confucius (551–479 BCE).
During this period, local polities negotiated their own alliances, waged wars against one another, up to defying the king's court in Luoyi. The gradual Partition of Jin, one of the most powerful states, is generally considered to mark the end of the Spring and Autumn period and the beginning of the Warring States period. This periodization dates back to late Western Han (c. 48 BCE – c. 9 CE).