Datong-Qinhuangdao railway in Shanxi, artery of China's coal transportation

Aerial photo taken on Oct. 24, 2018 shows staff members maintaining the Datong-Qinhuangdao railway in Datong, north China's Shanxi Province. The 653-km long Datong-Qinhuangdao railway is an artery of China's coal transportation. (Xinhua/Cao Yang)