Herds graze on the Ar Horqin grassland in Chifeng City, north China's Inner Mongolia Autonomous Region, June 1, 2019. (Photo: Xinhua)

Aerial photo taken on June 1, 2019 shows the landscape of Ar Horqin grassland in Chifeng City, north China's Inner Mongolia Autonomous Region. (Photo: Xinhua)

Aerial photo taken on June 1, 2019 shows a view of Ar Horqin grassland in Chifeng City, north China's Inner Mongolia Autonomous Region. (Photo: Xinhua)

Aerial photo taken on June 1, 2019 shows the landscape of Ar Horqin grassland in Chifeng City, north China's Inner Mongolia Autonomous Region. (Photo: Xinhua)

Herds graze on the Ar Horqin grassland in Chifeng City, north China's Inner Mongolia Autonomous Region, June 1, 2019. (Photo: Xinhua)

Herds forage on the Ar Horqin grassland in Chifeng City, north China's Inner Mongolia Autonomous Region, June 1, 2019. (Photo: Xinhua)

Herds forage on the Ar Horqin grassland in Chifeng City, north China's Inner Mongolia Autonomous Region, June 1, 2019. (Photo: Xinhua)