View of Guanshan Mountain in NW China

Aerial photo taken on June 7, 2022 shows the view of a forest farm of Guanshan Mountain in Zhangjiachuan Hui Autonomous County of Tianshui, northwest China's Gansu Province. (Xinhua/Chen Bin)

Cattles graze on grassland at a forest farm of Guanshan Mountain in Zhangjiachuan Hui Autonomous County of Tianshui, northwest China's Gansu Province, June 7, 2022. (Xinhua/Chen Bin)

Aerial photo taken on June 7, 2022 shows the view of Guanshan Mountain in Zhangjiachuan Hui Autonomous County of Tianshui, northwest China's Gansu Province. (Xinhua/Chen Bin)

Horses graze on grassland at a forest farm of Guanshan Mountain in Zhangjiachuan Hui Autonomous County of Tianshui, northwest China's Gansu Province, June 7, 2022. (Xinhua/Chen Bin)

Aerial photo taken on June 7, 2022 shows the view of a forest farm of Guanshan Mountain in Zhangjiachuan Hui Autonomous County of Tianshui, northwest China's Gansu Province. (Xinhua/Chen Bin)

Cattles rest on grassland at a forest farm of Guanshan Mountain in Zhangjiachuan Hui Autonomous County of Tianshui, northwest China's Gansu Province, June 7, 2022. (Xinhua/Chen Bin)