A herdsman herds animals on Hequ Grassland in Henan County, Huangnan Tibetan Autonomous Prefecture, northwest China's Qinghai Province, Sep 10, 2020.Photo:Xinhua

A herdswoman prepares to milk cows on Hequ Grassland in Henan County, Huangnan Tibetan Autonomous Prefecture, northwest China's Qinghai Province, Sept. 10, 2020.Photo:Xinhua

Aerial photo shows a view of Hequ Grassland in Henan County, Huangnan Tibetan Autonomous Prefecture, northwest China's Qinghai Province, Sept. 10, 2020.Photo:Xinhua

Aerial photo shows a view of Hequ Grassland in Henan County, Huangnan Tibetan Autonomous Prefecture, northwest China's Qinghai Province, Sept. 10, 2020.Photo:Xinhua

Photo shows herdsmen's tents on Hequ Grassland in Henan County, Huangnan Tibetan Autonomous Prefecture, northwest China's Qinghai Province, Sept. 10, 2020.Photo:Xinhua