Changchun City is located in the northern hemisphere in
the middle latitude zone of the Eurasian continent and the
east coast hinterland of the Great Plains of Northeast China,
covering an area of 2,057 km2. Changchun City has a
planning area of 3,911 km2 and a construction area of
158 km2. The study is mainly focused on Changchun City’s
five main areas: Chaoyang District, Nanguan District,
Kuangcheng District, Erdao District, and Greengarden
District.