1, the double-support city actually refers to the double-support model city, which is the national double-support model city. It is the honorary title of the city jointly named by the national double-support work leading group, the Department of Veterans Affairs and the General Political Department of the People's Liberation Army. The "Double Support Model City" is not only a national city brand awarded by the army and local government, but also one of the important city brands in China.

2. 10 2020 10 On October 20th, the national model city (county) naming and model unit and individual commendation conference was held in Beijing, and the list of national model cities was published. Including Beijing, Tianjin, Hebei, Shanxi, Inner Mongolia Autonomous Region, Liaoning, Jilin, Heilongjiang, Shanghai, Jiangsu, Zhejiang, Anhui, Fujian, Jiangxi, Shandong, Henan, Hubei, Hunan, Guangdong, Guangxi Zhuang Autonomous Region, Hainan, Chongqing, Sichuan, Guizhou, Yunnan and Xizang Autonomous Region.