Aerial photo taken on Aug. 31, 2019 shows the highland barley field in Bainang County, Xigaze, southwest China`s Tibet Autonomous Region. (Xinhua/Jigme Dorje)

Aerial photo taken on Aug. 31, 2019 shows the highland barley field in Bainang County, Xigaze, southwest China`s Tibet Autonomous Region. (Xinhua/Jigme Dorje)

Photo taken on Aug. 31, 2019 shows the highland barley field in Bainang County, Xigaze, southwest China`s Tibet Autonomous Region. (Xinhua/Jigme Dorje)

Aerial photo taken on Aug. 31, 2019 shows the highland barley field in Bainang County, Xigaze, southwest China`s Tibet Autonomous Region. (Xinhua/Jigme Dorje)

Villagers work in the highland barley field in Bainang County, Xigaze, southwest China`s Tibet Autonomous Region, Aug. 31, 2019. (Xinhua/Jigme Dorje)

Villagers collect highland barley spikes in Bainang County, Xigaze, southwest China`s Tibet Autonomous Region, Aug. 31, 2019. (Xinhua/Li Xin)

Aerial photo taken on Aug. 31, 2019 shows the highland barley field in Bainang County, Xigaze, southwest China`s Tibet Autonomous Region. (Xinhua/Li Xin)

Aerial photo taken on Aug. 31, 2019 shows the highland barley field in Bainang County, Xigaze, southwest China`s Tibet Autonomous Region. (Xinhua/Li Xin)

Aerial photo taken on Aug. 31, 2019 shows the highland barley field in Bainang County, Xigaze, southwest China`s Tibet Autonomous Region. (Xinhua/Li Xin)

A villager harvests highland barley in Bainang County, Xigaze, southwest China`s Tibet Autonomous Region, Aug. 31, 2019. (Xinhua/Li Xin)

Aerial photo shows a villager working in the highland barley field in Bainang County, Xigaze, southwest China`s Tibet Autonomous Region, Aug. 31, 2019. (Xinhua/Li Xin)