Photo taken on May 26, 2019 shows the scenery of the Wulingyuan Scenic Area in Zhangjiajie, central China's Hunan Province. Mountains are shrouded by fog after 3 days of rain in this area. Photo: Xinhua

Photo taken on May 26, 2019 shows the scenery of the Wulingyuan Scenic Area in Zhangjiajie, central China's Hunan Province. Mountains are shrouded by fog after 3 days of rain in this area. Photo: Xinhua

Photo taken on May 26, 2019 shows the scenery of the Wulingyuan Scenic Area in Zhangjiajie, central China's Hunan Province. Mountains are shrouded by fog after 3 days of rain in this area. Photo: Xinhua

Photo taken on May 26, 2019 shows the scenery of the Wulingyuan Scenic Area in Zhangjiajie, central China's Hunan Province. Mountains are shrouded by fog after 3 days of rain in this area. Photo: Xinhua