2. The Chengdu-Chongqing Twin Cities Economic Circle is located in the upper reaches of the Yangtze River, in the Sichuan Basin, bordering Hunan and Hubei in the east, Qinghai-Tibet in the west, Yunnan-Guizhou in the south and Shaanxi-Gansu in the north. It is an urbanization area with the highest development level and the greatest development potential in western China, and it is an important part of implementing the Yangtze River Economic Belt and the Belt and Road Strategy.
3. Five economic zones: Chengmianle Development Zone, Chengnan (Guangzhou) Chongqing Development Zone, Chengnei Chongqing Development Zone, Chongqing Everbright Development Zone and Yanjiang Development Zone.
4. Three urban concentration areas: Dawan Town Concentration Area, Nansui Guangcheng Town Concentration Area and Nanchuan Town Concentration Area.