View of Gangbug Glacier in China's Tibet

Aerial photo taken on Nov. 20, 2021 shows the Gangbug Glacier in the border area between Nagarze and Kangmar counties, southwest China's Tibet Autonomous Region. (Xinhua/Sun Ruibo)

Aerial photo taken on Nov. 21, 2021 shows the Gangbug Glacier in the border area between Nagarze and Kangmar counties, southwest China's Tibet Autonomous Region. (Xinhua/Sun Fei)

Photo taken on Nov. 20, 2021 shows the Gangbug Glacier in the border area between Nagarze and Kangmar counties, southwest China's Tibet Autonomous Region. (Xinhua/Sun Ruibo)

Aerial photo taken on Nov. 21, 2021 shows the Gangbug Glacier in the border area between Nagarze and Kangmar counties, southwest China's Tibet Autonomous Region. (Xinhua/Sun Fei)

Photo taken on Nov. 21, 2021 shows the Gangbug Glacier in the border area between Nagarze and Kangmar counties, southwest China's Tibet Autonomous Region. (Xinhua/Sun Ruibo)