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A cargo train runs on the Datong-Qinhuangdao railway in Datong, north China's Shanxi Province, Oct. 24, 2018. The 653-km long Datong-Qinhuangdao railway is an artery of China's coal transportation. (Xinhua/Cao Yang)
A cargo train runs on the Datong-Qinhuangdao railway in Datong, north China's Shanxi Province, Oct. 24, 2018. The 653-km long Datong-Qinhuangdao railway is an artery of China's coal transportation. (Xinhua/Cao Yang)