Aerial photo taken on Aug. 13, 2019 shows scenery on the Kalajun grassland in Tekes County, northwest China's Xinjiang Uyghur Autonomous Region. (Xinhua/Hu Huhu)

Photo taken on Aug. 13, 2019 shows scenery on the Kalajun grassland in Tekes County, northwest China's Xinjiang Uyghur Autonomous Region. (Xinhua/Hu Huhu)

Aerial photo taken on Aug. 13, 2019 shows scenery on the Kalajun grassland in Tekes County, northwest China's Xinjiang Uyghur Autonomous Region. (Xinhua/Hu Huhu)

Photo taken on Aug. 13, 2019 shows a scenery on the Kalajun grassland in Tekes County, northwest China's Xinjiang Uyghur Autonomous Region. (Xinhua/Hu Huhu)

Tourists visit the Kalajun grassland in Tekes County, northwest China's Xinjiang Uyghur Autonomous Region, Aug. 13, 2019. (Xinhua/Hu Huhu)

Tourists ride horses on the Kalajun grassland in Tekes County, northwest China's Xinjiang Uyghur Autonomous Region, Aug. 14, 2019. (Xinhua/Hu Huhu)

Aerial photo taken on Aug. 13, 2019 shows scenery on the Kalajun grassland in Tekes County, northwest China's Xinjiang Uyghur Autonomous Region. (Xinhua/Hu Huhu)

A local resident feeds water to two horses on the Kalajun grassland in Tekes County, northwest China's Xinjiang Uyghur Autonomous Region, Aug. 14, 2019. (Xinhua/Hu Huhu)

Photo taken on Aug. 13, 2019 shows scenery on the Kalajun grassland in Tekes County, northwest China's Xinjiang Uyghur Autonomous Region. (Xinhua/Hu Huhu)

Aerial photo taken on Aug. 14, 2019 shows tourists visiting the Kalajun grassland in Tekes County, northwest China's Xinjiang Uyghur Autonomous Region. (Xinhua/Hu Huhu)