Who was the emperor who changed Duke Zhou to Chongqing?

It was Song Guangzong who ordered the Duke of Zhou to be changed to Chongqing. Zhao, a native of Song Guangzong, was the 12th emperor of the Song Dynasty. After five years of Zhao's reign, the fruits of his rule gradually disappeared, and the Southern Song Dynasty began to turn from prosperity to decline.

2. Chongqing, located in the southwest of China, is the only municipality directly under the central government in the central and western regions, with a total area of 82,400 square kilometers. In the history of more than 3,000 years, Chongqing has been the national capital for three times and built a city for four times, which is called "Bayu" in history. In the past, "Chongqing" was called "Duke of Zhou".