Chongqing Yu Jiancheng

Chongqing was called Jiangzhou in ancient times, and later called Baxian, Chuzhou, Yuzhou and Duke of Zhou. During the Northern and Southern Dynasties, Ba County was changed to Chuzhou. In 58 1 year, Emperor Wendi changed Chuzhou to Yuzhou, and Chongqing was called "Chongqing" for short.