Combo photo shows the flooded historic site of Luoxingdun Island in Poyang Lake of Lushan City, east China's Jiangxi Province, July 12, 2017 (up) and the Luoxingdun Island in dry season on May 31, 2011 (bottom). The water level of Poyang Lake, China's biggest freshwater lake, has been higher than the warning level for days. (Photo/Xinhua)