Zhoulai (Chinese: 州來) was a small state of the Spring and Autumn period that ruled a crucial part of the middle Huai River valley. Its capital, known by the same name, was located in modern-day Fengtai County in Huainan. Due to its strategic location, Zhoulai controlled the most important route from Hubei to the Yellow Sea. This made it a target of the expansionist state of Chu, which subjugated Zhoulai in the late 7th century BC in order to gain access to the east. While nominally allowed to maintain autonomy under its own dynasty, Zhoulai effectively became a puppet state under Chu military occupation and civil administration. It survived in this condition until 529 BC, when its capital city was conquered by Wu and its ruling family was formally deposed.