Undated photo shows the eye-catching scenery of Emerald Lake in Da Qaidam (also known as Dachaidan) district in Haixi Mongolian and Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo: China News Service/Chen Falin)
Undated photo shows the eye-catching scenery of Emerald Lake in Da Qaidam (also known as Dachaidan) district in Haixi Mongolian and Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo: China News Service/Chen Falin)
Undated photo shows the eye-catching scenery of Emerald Lake in Da Qaidam (also known as Dachaidan) district in Haixi Mongolian and Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo: China News Service/Chen Falin)