Wang Qingyou shows his family income using a mobile phone app in Guiyang, capital of southwest China's Guizhou Province, July 14, 2018. Guizhou has become a pioneer in China's big data development. Big data is being widely applied in government management, business and daily life, contributing over 20 percent to the economic growth of Guizhou Province. The number of big data-related companies in Guizhou Province has grown from less than 1,000 in 2013 to more than 8,500 in 2018.(Xinhua/Ou Dongqu)