Chongqing in China's Yangtze River and Jialing River Interchange, 3000 years of history. Chongqing Originally known as Yuzhou. Year 1189 changed its name to Chongqing. Ming and Qing Dynasties era become China's southwestern region of materials distribution center. 1891 was designated foreign trade ports. 1940 set as the Republic of China Capital. After the founding of the People's Republic of the 1950s and early for the central municipalities, and later renamed cities in Sichuan Province. March 14, 1997 become China's fourth municipality directly under central authority, the central and western China is the only municipality in inland areas.
After the establishment of the new municipality of Chongqing, the domain area of 82,400 square kilometers. Exempted 43 districts (cities) County. The end of 1997 the total population 30.429 million, of which the urban population 23.582 million people.