Mount Qomolangma is seen behind clouds on April 30, 2020. (Xinhua/Jigme Dorje)

Photo taken on April 15, 2020 shows that clouds swirl around the Mount Qomolangma. (Xinhua/Sun Fei)

Photo taken on May 11, 2020 shows that clouds swirl around the Mount Qomolangma. (Xinhua/Tashi Tsering)

Photo taken on May 10, 2020 shows that clouds swirl around the Mount Qomolangma. (Xinhua/Tashi Tsering)

Photo taken on May 1, 2020 shows that clouds swirl around the Mount Qomolangma. (Xinhua/Purbu Zhaxi)

Photo taken on May 7, 2020 shows that clouds swirl around the Mount Qomolangma. (Xinhua/Jigme Dorje)

Photo taken on May 1, 2020 shows a view of Mount Qomolangma from the Rongpu Monastery in southwest China`s Tibet Autonomous Region. (Xinhua/Purbu Zhaxi)

Photo taken on May 18, 2020 shows that clouds swirl around the Mount Qomolangma. (Xinhua/Sun Fei)

Photo taken on May 10, 2020 shows that clouds swirl around the Mount Qomolangma. (Xinhua/Tashi Tsering)

Photo taken on April 28, 2020 shows that clouds swirl around the Mount Qomolangma. (Xinhua/Purbu Zhaxi)

Photo taken on April 19, 2020 shows that clouds swirl around the Mount Qomolangma. (Xinhua/Sun Fei)

Photo taken on May 7, 2020 shows that clouds swirl around the Mount Qomolangma. (Xinhua/Jigme Dorje)

Photo taken on April 28, 2020 shows that clouds swirl around the Mount Qomolangma. (Xinhua/Purbu Zhaxi)

Photo taken on May 4, 2020 shows that clouds swirl around the Mount Qomolangma. (Xinhua/Jigme Dorje)

Photo taken on May 10, 2020 shows that clouds swirl around the Mount Qomolangma. (Xinhua/Tashi Tsering)

Photo taken on April 25, 2020 shows that clouds swirl around the Mount Qomolangma. (Xinhua/Purbu Zhaxi)