Kāizhōu
Kaizhou lies in eastern Sichuan north of the Yangtze, in the jurisdiction of Kuizhou Prefecture. Its basin and valleys belong to the Xiao River country beneath the Daba Mountains.
The Yuan jurisdiction was called Kaizhou. In 1373 the Ming government reduced it to Kai County, and the Qing kept the county under Kuizhou. Its city wall was built during the Chenghua reign, 1465–1487, and repaired in 1769.