Photo taken on April 30, 2020 shows a crescent-shaped pool formed after a snowfall at the foot of Mount Qomolangma in southwest China's Tibet Autonomous Region. (Photos: Xinhua/Purbu Zhaxi)

Photo taken on April 30, 2020 shows a crescent-shaped pool formed after a snowfall at the foot of Mount Qomolangma in southwest China's Tibet Autonomous Region.

Photo taken on April 30, 2020 shows a crescent-shaped pool formed after a snowfall at the foot of Mount Qomolangma in southwest China's Tibet Autonomous Region.

Photo taken on April 30, 2020 shows a crescent-shaped pool formed after a snowfall at the foot of Mount Qomolangma in southwest China's Tibet Autonomous Region.