Photo taken with a mobile phone on April 24, 2021 shows a view of Mount Qungmknag in Nyemo County of Lhasa, southwest China's Tibet Autonomous Region. (Photos: Xinhua/Shen Hongbing)

Photo taken with a mobile phone on April 24, 2021 shows glacier at the foot of Mount Qungmknag in Nyemo County of Lhasa, southwest China's Tibet Autonomous Region.

Photo taken with a mobile phone on April 24, 2021 shows the glacial landform at the foot of Mount Qungmknag in Nyemo County of Lhasa, southwest China's Tibet Autonomous Region.

Photo taken with a mobile phone on April 24, 2021 shows the glacial landform at the foot of Mount Qungmknag in Nyemo County of Lhasa, southwest China's Tibet Autonomous Region.

Photo taken with a mobile phone on April 24, 2021 shows an icy lake at the foot of Mount Qungmknag in Nyemo County of Lhasa, southwest China's Tibet Autonomous Region.

Photo taken with a mobile phone on April 24, 2021 shows the glacial landform at the foot of Mount Qungmknag in Nyemo County of Lhasa, southwest China's Tibet Autonomous Region.

Photo taken on April 24, 2021 shows an icy lake at the foot of Mount Qungmknag in Nyemo County of Lhasa, southwest China's Tibet Autonomous Region.