Aerial photo taken on April 27, 2019 shows a view of the Nujiang River in Bingzhongluo Town in Gongshan Dulong and Nu Autonomous County, southwest China's Yunnan Province. (Xinhua/Jiang Wenyao)

Aerial photo taken on April 27, 2019 shows a view of the Nujiang River in Bingzhongluo Town in Gongshan Dulong and Nu Autonomous County, southwest China's Yunnan Province. (Xinhua/Jiang Wenyao)

Aerial photo taken on April 27, 2019 shows a view of the Nujiang River in Bingzhongluo Town in Gongshan Dulong and Nu Autonomous County, southwest China's Yunnan Province. (Xinhua/Jiang Wenyao)

Aerial photo taken on April 27, 2019 shows a view of the Nujiang River in Bingzhongluo Town in Gongshan Dulong and Nu Autonomous County, southwest China's Yunnan Province. (Xinhua/Jiang Wenyao)