Winter scenery of Yudaokou pasture in Chengde, N China

This photo taken on Feb. 14, 2023 shows the winter scenery of Yudaokou pasture in Chengde, north China's Hebei Province. (Photo by Wang Liqun/Xinhua)

This aerial photo taken on Feb. 14, 2023 shows the winter scenery of Yudaokou pasture in Chengde, north China's Hebei Province. (Photo by Wang Liqun/Xinhua)

This aerial photo taken on Feb. 14, 2023 shows the winter scenery of Yudaokou pasture in Chengde, north China's Hebei Province. (Photo by Wang Liqun/Xinhua)

This aerial photo taken on Feb. 14, 2023 shows the winter scenery of Yudaokou pasture in Chengde, north China's Hebei Province. (Photo by Wang Liqun/Xinhua)

This aerial photo taken on Feb. 14, 2023 shows the winter scenery of Yudaokou pasture in Chengde, north China's Hebei Province. (Photo by Wang Liqun/Xinhua)

This aerial photo taken on Feb. 14, 2023 shows the winter scenery of Yudaokou pasture in Chengde, north China's Hebei Province. (Photo by Wang Liqun/Xinhua)