Aerial photo taken on Oct 24, 2018 shows a cargo train running on the Datong-Qinhuangdao railway in Datong, China's Shanxi province. [Photo/Xinhua]

Aerial photo taken on Oct 23, 2018 shows a 40-megawatt photovoltaic (PV) power station in Tianzhen county of Datong city, Shanxi province. [Photo/Xinhua]