Photo taken on Nov. 4, 2020 shows a view of Dunhuang Yardang National Geopark in Dunhuang, northwest China's Gansu Province. Located northwest of Dunhuang City, the Dunhuang Yardang National Geopark is famous for its windswept rock formations. (Xinhua/Ma Xiping)

Photo taken on Nov. 4, 2020 shows a view of Dunhuang Yardang National Geopark in Dunhuang, northwest China's Gansu Province. Located northwest of Dunhuang City, the Dunhuang Yardang National Geopark is famous for its windswept rock formations. (Xinhua/Ma Xiping)

Photo taken on Nov. 4, 2020 shows a view of Dunhuang Yardang National Geopark in Dunhuang, northwest China's Gansu Province. Located northwest of Dunhuang City, the Dunhuang Yardang National Geopark is famous for its windswept rock formations. (Xinhua/Ma Xiping)

Photo taken on Nov. 4, 2020 shows a view of Dunhuang Yardang National Geopark in Dunhuang, northwest China's Gansu Province. Located northwest of Dunhuang City, the Dunhuang Yardang National Geopark is famous for its windswept rock formations. (Xinhua/Ma Xiping)

Photo taken on Nov. 4, 2020 shows a view of Dunhuang Yardang National Geopark in Dunhuang, northwest China's Gansu Province. Located northwest of Dunhuang City, the Dunhuang Yardang National Geopark is famous for its windswept rock formations. (Xinhua/Ma Xiping)