Chinese Vice Premier Wang Yang delivers a keynote speech at Expo Central China 2017 in Hefei, east China's Anhui Province, May 17, 2017. (Xinhua/Guo Chen)
Chinese Vice Premier Wang Yang delivers a keynote speech at Expo Central China 2017 in Hefei, east China's Anhui Province, May 17, 2017. (Xinhua/Guo Chen)