A sanitationman drinks water in Xiangyang City, central China's Hubei Province, June 18, 2013. The highest temperature in many parts of China reached 37 degrees centigrade Wednesday. Photo: Xinhua

Citizens play in a pool in Suining City, southwest China's Sichuan Province, June 18, 2013. The highest temperature in many parts of China reached 37 degrees centigrade Wednesday. Photo: Xinhua

An ostrich is splashed with water at a zoo in Fuyang City, east China's Anhui Province, June 18, 2013. The highest temperature in many parts of China reached 37 degrees centigrade Wednesday. Photo: Xinhua

A fitter works at a construction site in southwest China's Chongqing Municipality, June 18, 2013. The highest temperature in many parts of China reached 37 degrees centigrade Wednesday. Photo: Xinhua