Photo taken on June 17, 2015 shows the scenery at Nanweng River National Nature Reserve, northeast China's Heilongjiang Province. As the largest nature reserve located at the highest latitude in China for forest-marsh wetland ecosystems in the cold-temperate zone, Nanweng River National Nature Reserve holds the most concentrated marsh wetlands in the forest of Dahinggan Mountains (Greater Hinggan Mountain).[Photo/Xinhua]