Changchun is the capital and largest city of Jilin Province, China, on the Songliao Plain. Changchun is administered as a sub-provincial city, comprising seven districts, one county and three county-level cities. At the 2020 census of China, Changchun had a population of 9,066,906. Changchun's metro area, comprising five districts and one development area, had a population of 5,019,477. Shuangyang…