Aerial photo taken on Aug. 8, 2017 shows the scenery of Qiandao Lake, or Thousand-Island Lake, in Chun'an County, east China's Zhejiang Province. The lake covers 573 square kilometers, and is home to 114 known fish species, with an economic value of over 4 billion yuan (600 million U.S. dollars). (Xinhua/Zhang Cheng)