Aerial photo taken on Aug. 4, 2019 shows the scenery of a part of a glacier in Rutog County of Ngari Prefecture, southwest China`s Tibet Autonomous Region. (Xinhua/Jigme Dorje)

People take photos of a glacier in Rutog County of Ngari Prefecture, southwest China`s Tibet Autonomous Region, Aug. 4, 2019. (Xinhua/Jigme Dorje)

Photo taken on Aug. 4, 2019 shows the scenery of a part of a glacier in Rutog County of Ngari Prefecture, southwest China`s Tibet Autonomous Region. (Xinhua/Jigme Dorje)

Aerial photo taken on Aug. 4, 2019 shows the scenery of a part of a glacier in Rutog County of Ngari Prefecture, southwest China`s Tibet Autonomous Region. (Xinhua/Jigme Dorje)

Aerial photo taken on Aug. 4, 2019 shows the scenery of a part of a glacier in Rutog County of Ngari Prefecture, southwest China`s Tibet Autonomous Region. (Xinhua/Jigme Dorje)

A tourist takes photos of a glacier in Rutog County of Ngari Prefecture, southwest China`s Tibet Autonomous Region, Aug. 4, 2019. (Xinhua/Jigme Dorje)

Aerial photo taken on Aug. 4, 2019 shows the scenery of a part of a glacier in Rutog County of Ngari Prefecture, southwest China`s Tibet Autonomous Region. (Xinhua/Jigme Dorje)

A tourist takes photos of a glacier in Rutog County of Ngari Prefecture, southwest China`s Tibet Autonomous Region, Aug. 4, 2019. (Xinhua/Jigme Dorje)

Aerial photo taken on Aug. 4, 2019 shows the scenery of a part of a glacier in Rutog County of Ngari Prefecture, southwest China`s Tibet Autonomous Region. (Xinhua/Jigme Dorje)

Photo taken on Aug. 4, 2019 shows the flowers at the foot of a glacier in Rutog County of Ngari Prefecture, southwest China`s Tibet Autonomous Region. (Xinhua/Jigme Dorje)

Aerial photo taken on Aug. 4, 2019 shows the scenery of a part of a glacier in Rutog County of Ngari Prefecture, southwest China`s Tibet Autonomous Region. (Xinhua/Jigme Dorje)