
A citizen steps out from a carriage at a subway station in Changchun, capital of northeast China's Jilin Province, June 30, 2017. Subway line one in Changchun started operation on Friday. (Xinhua/Lin Hong)

A citizen steps out from a carriage at a subway station in Changchun, capital of northeast China's Jilin Province, June 30, 2017. Subway line one in Changchun started operation on Friday. (Xinhua/Lin Hong)