Aerial photo taken on July 15, 2020 shows the summer view of Jingzhong Mountain in Qianxi County, north China's Hebei Province. (Xinhua/Mu Yu)

Aerial photo taken on July 15, 2020 shows the summer view of Jingzhong Mountain in Qianxi County, north China's Hebei Province. (Xinhua/Mu Yu)

Aerial photo taken on July 15, 2020 shows the summer view of Jingzhong Mountain in Qianxi County, north China's Hebei Province. (Xinhua/Mu Yu)

Aerial photo taken on July 15, 2020 shows the summer view of Jingzhong Mountain in Qianxi County, north China's Hebei Province. (Xinhua/Mu Yu)