Photo taken on Aug. 12, 2018 shows the view of Langya Mountain in Yixian County, north China's Hebei Province. Clouds and fog made Langya Mountain indistinct after a rainfall. (Xinhua)

Photo taken on Aug. 12, 2018 shows the view of Langya Mountain in Yixian County, north China's Hebei Province. Clouds and fog made Langya Mountain indistinct after a rainfall. (Xinhua)

Photo taken on Aug. 12, 2018 shows the view of Langya Mountain in Yixian County, north China's Hebei Province. Clouds and fog made Langya Mountain indistinct after a rainfall. (Xinhua)

Photo taken on Aug. 12, 2018 shows the view of Langya Mountain in Yixian County, north China's Hebei Province. Clouds and fog made Langya Mountain indistinct after a rainfall. (Xinhua)

Photo taken on Aug. 12, 2018 shows the view of Langya Mountain in Yixian County, north China's Hebei Province. Clouds and fog made Langya Mountain indistinct after a rainfall. (Xinhua/Chen Xiaodong)