![](http://www.ecns.cn/hd/2021/09/13/83abd07be0f446dab1a8453856266ba0.jpg)
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)
![](http://www.ecns.cn/hd/2021/09/13/3fc5a21d1a5a42918356643b227fb1c7.jpg)
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)
![](http://www.ecns.cn/hd/2021/09/13/2f244c2740d6421f9dae7a68e398479f.jpg)
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)