![A view of the Zhangye National Wetland Park in Zhangye City, Northwest China\'s Gansu Province as it is partially frozen in the latest cold front. (Photo: China News Service/Wang Chao)](http://www.ecns.cn/hd/2019/02/27/3ea47679aebe452b8eea1f0811566bd9.jpg)
A view of the Zhangye National Wetland Park in Zhangye City, Northwest China's Gansu Province as it is partially frozen in the latest cold front. (Photo: China News Service/Wang Chao)
![A view of the Zhangye National Wetland Park in Zhangye City, Northwest China\'s Gansu Province as it is partially frozen in the latest cold front. (Photo: China News Service/Wang Chao)](http://www.ecns.cn/hd/2019/02/27/3ddb9b82f09b48c8abda39989fb424f5.jpg)
A view of the Zhangye National Wetland Park in Zhangye City, Northwest China's Gansu Province as it is partially frozen in the latest cold front. (Photo: China News Service/Wang Chao)
![A view of the Zhangye National Wetland Park in Zhangye City, Northwest China\'s Gansu Province as it is partially frozen in the latest cold front. (Photo: China News Service/Wang Chao)](http://www.ecns.cn/hd/2019/02/27/0d71ef1bbc85493292576c0e61252808.jpg)
A view of the Zhangye National Wetland Park in Zhangye City, Northwest China's Gansu Province as it is partially frozen in the latest cold front. (Photo: China News Service/Wang Chao)
![A view of the Zhangye National Wetland Park in Zhangye City, Northwest China\'s Gansu Province as it is partially frozen in the latest cold front. (Photo: China News Service/Wang Chao)](http://www.ecns.cn/hd/2019/02/27/e2f24a7acf7d47beb245e63aae9a8e67.jpg)
A view of the Zhangye National Wetland Park in Zhangye City, Northwest China's Gansu Province as it is partially frozen in the latest cold front. (Photo: China News Service/Wang Chao)