1. Changchun official website query, Changchun 2022 three effective scores of 400 points.

2. Changchun is located in the northern temperate zone in the middle latitude of the northern hemisphere, at the intersection of two traffic lines in central People's Republic of China (PRC), Jingha and Hunwu. It is the political, economic and cultural center of Jilin Province, bordering Songyuan City in the northwest, Siping City in the southwest, Jilin City in the southeast and Heilongjiang Province in the northeast. The main city is located on the Yitong River platform in the hinterland of Songliao Plain.