![](/r/xjen/images/cms/picture/2023/04/po1.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)
![](/r/xjen/images/cms/picture/2023/04/po2.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)
![](/r/xjen/images/cms/picture/2023/04/po3.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)
![](/r/xjen/images/cms/picture/2023/04/po4.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)