Swans rest on the Sayram Lake in Bortala Mongol autonomous prefecture, northwest China’s Xinjiang Uygur autonomous region, May 9, 2015.[Photo/Xinhua]

Sayram Lake, renowned as a pearl on the mountain, is the largest and highest alpine lake in the Xinjiang Uygur autonomous region. The lake is located in a mountain basin in the western part of Tianshan Mountain.[Photo/Xinhua]

Sayram Lake, renowned as a pearl on the mountain, is the largest and highest alpine lake in the Xinjiang Uygur autonomous region. The lake is located in a mountain basin in the western part of Tianshan Mountain.[Photo by Jiang Hao/Asianewsphoto]