Photo taken on June 7, 2013 shows the scenery of the plateau lake Puma Yumco in southwest China's Tibet Autonomous Region.

Photo taken on June 7, 2013 shows the scenery of the plateau lake Puma Yumco in southwest China's Tibet Autonomous Region.

Photo taken on June 7, 2013 shows the scenery of the plateau lake Puma Yumco in southwest China's Tibet Autonomous Region.

Photo taken on June 7, 2013 shows the scenery of the plateau lake Puma Yumco in southwest China's Tibet Autonomous Region.