![](http://www.ecns.cn/hd/2023/03/22/bd2abf08184049feb78fd3f5e7383684.jpg)
Chinese frontier soldiers walk hand-in-hand on a snow-covered mountain to patrol the border area more than 5,200 above sea level in Ali Prefecture, southwest China's Tibet Autonomous Region, March 21, 2023. (Photo: China News Service/Liu Xiaodong)
Soldiers braved the cold and trudged in heavy snow on a steep slope at the foot of Qomolangma to guard the border.
![](http://www.ecns.cn/hd/2023/03/22/b2a605f463164cf68383620eddd3f153.jpg)
Chinese frontier soldiers walk hand-in-hand on a snow-covered mountain to patrol the border area more than 5,200 above sea level in Ali Prefecture, southwest China's Tibet Autonomous Region, March 21, 2023. (Photo: China News Service/Liu Xiaodong)
![](http://www.ecns.cn/hd/2023/03/22/8e8c046905d0458fb62791d7053b747a.jpg)
Chinese frontier soldiers walk hand-in-hand on a snow-covered mountain to patrol the border area more than 5,200 above sea level in Ali Prefecture, southwest China's Tibet Autonomous Region, March 21, 2023. (Photo: China News Service/Liu Xiaodong)
![](http://www.ecns.cn/hd/2023/03/22/ea29571f93d24c67bd1391f1958c2035.jpg)
Chinese frontier soldiers walk hand-in-hand on a snow-covered mountain to patrol the border area more than 5,200 above sea level in Ali Prefecture, southwest China's Tibet Autonomous Region, March 21, 2023. (Photo: China News Service/Liu Xiaodong)
![](http://www.ecns.cn/hd/2023/03/22/c4f96b81d2a642539336c26637e671bf.jpg)
Chinese frontier soldiers rest on a snow-covered mountain during a patrol to the border area more than 5,200 above sea level in Ali Prefecture, southwest China's Tibet Autonomous Region, March 21, 2023. (Photo: China News Service/Liu Xiaodong)