Aerial photo taken on April 6, 2020 shows a view of Zayu River in Zayu County of Nyingchi City, southwest China's Tibet Autonomous Region. Zayu, located in the southeast of the Qinghai-Tibet Plateau, has a mild climate featuring abundant rainfall and sunshine. [Photo/Xinhua]

Photo taken on April 7, 2020 shows a view of Zayu Valley in Zayu County of Nyingchi City, southwest China's Tibet Autonomous Region. Zayu, located in the southeast of the Qinghai-Tibet Plateau, has a mild climate featuring abundant rainfall and sunshine. [Photo/Xinhua]

Aerial photo taken on April 6, 2020 shows a view of Zayu River in Zayu County of Nyingchi City, southwest China's Tibet Autonomous Region. Zayu, located in the southeast of the Qinghai-Tibet Plateau, has a mild climate featuring abundant rainfall and sunshine. [Photo/Xinhua]