Photo taken on Oct. 7, 2019 shows woods on the south bank of Lhasa River in Lhasa, southwest China`s Tibet Autonomous Region. (Xinhua/Zhang Rufeng)

Photo taken on Oct. 7, 2019 shows woods on the south bank of Lhasa River in Lhasa, southwest China`s Tibet Autonomous Region. (Photo by Sun Fei/Xinhua)

Photo taken on Oct. 6, 2019 shows the woods in Paggarxoi Village of Ta`gyai Township of Dagze District in Lhasa, southwest China`s Tibet Autonomous Region. (Photo by Sun Fei/Xinhua)

Photo taken on Oct. 6, 2019 shows a view in Paggarxoi Village of Ta`gyai Township of Dagze District in Lhasa, southwest China`s Tibet Autonomous Region. (Xinhua/Zhang Rufeng)

Photo taken on Oct. 7, 2019 shows woods on the south bank of Lhasa River in Lhasa, southwest China`s Tibet Autonomous Region. (Xinhua/Zhang Rufeng)

Photo taken on Oct. 6, 2019 shows woods in the north of the Lhasa River valley in Lhasa, southwest China`s Tibet Autonomous Region. (Photo by Sun Fei/Xinhua)

Photo taken on Oct. 6, 2019 shows woods in the north of the Lhasa River valley in Lhasa, southwest China`s Tibet Autonomous Region. (Xinhua/Zhang Rufeng)

Photo taken on Oct. 6, 2019 shows the woods in Paggarxoi Village of Ta`gyai Township of Dagze District in Lhasa, southwest China`s Tibet Autonomous Region. (Xinhua/Zhang Rufeng)

Photo taken on Oct. 6, 2019 shows the scenery along a road in Lhasa, southwest China`s Tibet Autonomous Region. (Photo by Sun Fei/Xinhua)

Aerial photo taken on Oct. 7, 2019 shows a view of the Lhasa River valley in Lhasa, southwest China`s Tibet Autonomous Region. (Photo by Sun Fei/Xinhua)

Photo taken on Oct. 6, 2019 shows a view in Paggarxoi Village of Ta`gyai Township of Dagze District in Lhasa, southwest China`s Tibet Autonomous Region. (Photo by Sun Fei/Xinhua)

Photo taken on Oct. 6, 2019 shows the woods in Paggarxoi Village of Ta`gyai Township of Dagze District in Lhasa, southwest China`s Tibet Autonomous Region. (Xinhua/Zhang Rufeng)

Photo taken on Oct. 6, 2019 shows a view in Paggarxoi Village of Ta`gyai Township of Dagze District in Lhasa, southwest China`s Tibet Autonomous Region. (Photo by Sun Fei/Xinhua)

Aerial photo taken on Oct. 7, 2019 shows a view of the Lhasa River valley in Lhasa, southwest China`s Tibet Autonomous Region. (Photo by Sun Fei/Xinhua)