![](http://www.ecns.cn/hd/2023/04/10/fd28eac024f54d0a9692ad93ed4e44f8.jpg)
Police officers walk hand-in-hand on a snow-covered mountain to patrol the border area more than 3,600 above sea level in northwest China's Xinjiang Uyghur Autonomous Region, April 9, 2023. (Photo: China News Service/Lv Zhiheng)
![](http://www.ecns.cn/hd/2023/04/10/8b21785c7b404cd4889971ba526c6e15.jpg)
Police officers walk hand-in-hand on a snow-covered mountain to patrol the border area more than 3,600 above sea level in northwest China's Xinjiang Uyghur Autonomous Region, April 9, 2023. (Photo: China News Service/Lv Zhiheng)
![](http://www.ecns.cn/hd/2023/04/10/d23892912dd14b0b803540d52bff3111.jpg)
Police officers fly a drone to patrol the border area on a snow-covered mountain in northwest China's Xinjiang Uyghur Autonomous Region, April 9, 2023. (Photo: China News Service/Lv Zhiheng)
![](http://www.ecns.cn/hd/2023/04/10/334c4efe88334b7997f1480507218d02.jpg)
Police officers walk hand-in-hand on a snow-covered mountain to patrol the border area more than 3,600 above sea level in northwest China's Xinjiang Uyghur Autonomous Region, April 9, 2023. (Photo: China News Service/Lv Zhiheng)