Photo taken on July 20, 2019 shows red deer on a grassland in Dahe Township, Zhangye, northwest China's Gansu Province. More than 100 red deer have a rest and search for food on the grassland here, forming a scenery in the midsummer. (Xinhua/Fan Peishen)

Photo taken on July 20, 2019 shows red deer on a grassland in Dahe Township, Zhangye, northwest China's Gansu Province. More than 100 red deer have a rest and search for food on the grassland here, forming a scenery in the midsummer. (Xinhua/Fan Peishen)

Photo taken on July 20, 2019 shows red deer on a grassland in Dahe Township, Zhangye, northwest China's Gansu Province. More than 100 red deer have a rest and search for food on the grassland here, forming a scenery in the midsummer. (Xinhua/Fan Peishen)

Photo taken on July 20, 2019 shows red deer on a grassland in Dahe Township, Zhangye, northwest China's Gansu Province. More than 100 red deer have a rest and search for food on the grassland here, forming a scenery in the midsummer. (Xinhua/Fan Peishen)

Photo taken on July 20, 2019 shows red deer on a grassland in Dahe Township, Zhangye, northwest China's Gansu Province. More than 100 red deer have a rest and search for food on the grassland here, forming a scenery in the midsummer. (Xinhua/Fan Peishen)

Photo taken on July 20, 2019 shows red deer on a grassland in Dahe Township, Zhangye, northwest China's Gansu Province. More than 100 red deer have a rest and search for food on the grassland here, forming a scenery in the midsummer. (Xinhua/Fan Peishen)

Photo taken on July 20, 2019 shows a red deer on a grassland in Dahe Township, Zhangye, northwest China's Gansu Province. More than 100 red deer have a rest and search for food on the grassland here, forming a scenery in the midsummer. (Xinhua/Fan Peishen)

Photo taken on July 20, 2019 shows red deer on a grassland in Dahe Township, Zhangye, northwest China's Gansu Province. More than 100 red deer have a rest and search for food on the grassland here, forming a scenery in the midsummer. (Xinhua/Fan Peishen)

Photo taken on July 20, 2019 shows red deer on a grassland in Dahe Township, Zhangye, northwest China's Gansu Province. More than 100 red deer have a rest and search for food on the grassland here, forming a scenery in the midsummer. (Xinhua/Fan Peishen)