Photo taken on July 13, 2015 shows a scene of the Erhai Lake in Dali, southwest China's Yunnan Province. Yunnan has planned to spend 26.4 billion yuan (4.1 billion U.S. dollars) to tackle pollution in the Erhai Lake, which saw blooms of blue green algae in 1996 and 2003. (Xinhua/Lin Yiguang)
