People escape the heat in an air-raid shelter as the temperature rises in Hangzhou, East China's Zhejiang province, July 7, 2017. Hangzhou became China's third hottest city in 2017 after Chongqing and Fuzhou in a latest report released by the National Climate Center under China Meteorological Administration. The eastern Chinese city endures waves of summer heat after the end of mould rains in early July. [Photo/VCG]