Photo taken shows a solar halo over Mount Qomolangma. (Xinhua/Jigme Dorje)

Photo taken shows the Mount Qomolangma at sunrise. (Xinhua/Jigme Dorje)

A yak transport team prepares to head to the advance camp at an altitude of 6,500 meters on Mount Qomolangma. (Xinhua/Jigme Dorje)

Photo taken on April 25, 2020 shows the Mount Qomolangma at sunrise. (Xinhua/Sun Fei)

Mount Qomolangma is pictured from the Rongbuk Monastery at the foot of Mount Qomolangma . (Xinhua/Purbu Zhaxi)

Mount Qomolangma is pictured from the Kya Wu Lha Pass . (Xinhua/Purbu Zhaxi)

Photo taken on May 4, 2020 shows the Mount Qomolangma shrouded by clouds. (Xinhua/Jigme Dorje)

Herdsmen drive yaks back to Mount Qomolangma base camp. (Xinhua/Purbu Zhaxi)