Photo taken on Nov. 8, 2018 shows a view of the Guiguling National Forest Park in Yunwushan Town of Shiquan County, northwest China's Shaanxi Province. (Photo: Xinhua)

Photo taken on Nov. 8, 2018 shows a view of the Guiguling National Forest Park in Yunwushan Town of Shiquan County, northwest China's Shaanxi Province. (Photo: Xinhua)

Photo taken on Nov. 8, 2018 shows a view of the Guiguling National Forest Park in Yunwushan Town of Shiquan County, northwest China's Shaanxi Province. (Photo: Xinhua)

Photo taken on Nov. 8, 2018 shows a view of the Guiguling National Forest Park in Yunwushan Town of Shiquan County, northwest China's Shaanxi Province. (Photo: Xinhua)

Photo taken on Nov. 8, 2018 shows a view of the Guiguling National Forest Park in Yunwushan Town of Shiquan County, northwest China's Shaanxi Province. (Photo: Xinhua)

Photo taken on Nov. 8, 2018 shows a view of the Guiguling National Forest Park in Yunwushan Town of Shiquan County, northwest China's Shaanxi Province. (Photo: Xinhua)

Photo taken on Nov. 8, 2018 shows a view of the Guiguling National Forest Park in Yunwushan Town of Shiquan County, northwest China's Shaanxi Province. (Photo: Xinhua)

Photo taken on Nov. 8, 2018 shows a view of the Guiguling National Forest Park in Yunwushan Town of Shiquan County, northwest China's Shaanxi Province. (Photo: Xinhua)

Photo taken on Nov. 8, 2018 shows a view of the Guiguling National Forest Park in Yunwushan Town of Shiquan County, northwest China's Shaanxi Province. (Photo: Xinhua)

Photo taken on Nov. 8, 2018 shows a view of the Guiguling National Forest Park in Yunwushan Town of Shiquan County, northwest China's Shaanxi Province. (Photo: Xinhua)

Photo taken on Nov. 8, 2018 shows a view of the Guiguling National Forest Park in Yunwushan Town of Shiquan County, northwest China's Shaanxi Province.(Photo: Xinhua)