In pics: Zhalong National Nature Reserve in Qiqihar, NE China's Heilongjiang

Red-crowned cranes fly over Zhalong National Nature Reserve in Qiqihar, northeast China's Heilongjiang Province, Aug. 1, 2018. Zhalong National Nature Reserve, covering 2,100 square kilometers, was set up in 1979 in a northeast China's reed wetland. It provides a major habitat for red-crowned cranes and other wildlife. (Xinhua/Wang Kai)