Photo taken on Sept. 14, 2019 shows the scenery at the Golden Pond Ecological Scenic Spot in Dagze District of Lhasa, southwest China's Tibet Autonomous Region. (Photo: Xinhua)

Photo taken on Sept. 14, 2019 shows the scenery at the Golden Pond Ecological Scenic Spot in Dagze District of Lhasa, southwest China's Tibet Autonomous Region. (Photo: Xinhua)

A butterfly lands on a flower in the Golden Pond Ecological Scenic Spot in Dagze District of Lhasa, southwest China's Tibet Autonomous Region, Sept. 14, 2019. (Photo: Xinhua)

Photo taken on Sept. 14, 2019 shows the scenery at the Golden Pond Ecological Scenic Spot in Dagze District of Lhasa, southwest China's Tibet Autonomous Region. (Photo: Xinhua)

Photo taken on Sept. 14, 2019 shows the scenery at the Golden Pond Ecological Scenic Spot in Dagze District of Lhasa, southwest China's Tibet Autonomous Region. (Photo: Xinhua)

Photo taken on Sept. 14, 2019 shows the scenery at the Golden Pond Ecological Scenic Spot in Dagze District of Lhasa, southwest China's Tibet Autonomous Region. (Photo: Xinhua)