![](http://www.ecns.cn/hd/2023/11/23/35743fef508b4babaae14ca48493f879.jpg)
Whooper swans, under China's second-class state protection, swim in a lake surrounded by a desert, transforming it to a "Swan Lake" scene in Ulan county, Haixi Mongol and Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo provided to China News Service)
![](http://www.ecns.cn/hd/2023/11/23/73a8b21bc3144e6dbf011295c2472df7.jpg)
Whooper swans, under China's second-class state protection, swim in a lake surrounded by a desert, transforming it to a "Swan Lake" scene in Ulan county, Haixi Mongol and Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo provided to China News Service)
![](http://www.ecns.cn/hd/2023/11/23/811136ab21b2458fa82b83886c9e55d6.jpg)
Whooper swans, under China's second-class state protection, swim in a lake surrounded by a desert, transforming it to a "Swan Lake" scene in Ulan county, Haixi Mongol and Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo provided to China News Service)
![](http://www.ecns.cn/hd/2023/11/23/7c40182df3794d1fab17b214e6143258.jpg)
Whooper swans, under China's second-class state protection, swim in a lake surrounded by a desert, transforming it to a "Swan Lake" scene in Ulan county, Haixi Mongol and Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo provided to China News Service)
![](http://www.ecns.cn/hd/2023/11/23/2fdde391a4974c2fa3a788e0a4690418.jpg)
Whooper swans, under China's second-class state protection, swim in a lake surrounded by a desert, transforming it to a "Swan Lake" scene in Ulan county, Haixi Mongol and Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo provided to China News Service)