Laborers work at a construction site of a cloud data center in Guian New Area, southwest China's Guizhou Province, May 19, 2019. As one of the country's pilot zones, Guian New Area is a national demonstration area of inland opening-up economy. Despite one of the least developed regions in China, Guizhou has pioneered China's big data industry due to its climate, power supply and network infrastructure. (Xinhua/Ou Dongqu)