Photo taken on Oct. 5, 2020 shows the autumn scenery of Hadamen national forest park in Hohhot, north China's Inner Mongolia Autonomous Region. (Xinhua/Peng Yuan)

Photo taken on Oct. 5, 2020 shows the autumn scenery of Hadamen national forest park in Hohhot, north China's Inner Mongolia Autonomous Region. (Xinhua/Peng Yuan)

Photo taken on Oct. 5, 2020 shows the autumn scenery of Hadamen national forest park in Hohhot, north China's Inner Mongolia Autonomous Region. (Xinhua/Peng Yuan)

Photo taken on Oct. 5, 2020 shows the autumn scenery of Hadamen national forest park in Hohhot, north China's Inner Mongolia Autonomous Region. (Xinhua/Peng Yuan)

Photo taken on Oct. 5, 2020 shows the autumn scenery of Hadamen national forest park in Hohhot, north China's Inner Mongolia Autonomous Region. (Xinhua/Peng Yuan)

Photo taken on Oct. 5, 2020 shows the autumn scenery of Yudaokou pasture in Chengde City, north China's Hebei Province. (Photo by Liu Mancang/Xinhua)

Photo taken on Oct. 5, 2020 shows the autumn scenery of Yudaokou pasture in Chengde City, north China's Hebei Province. (Photo by Liu Mancang/Xinhua)

Aerial photo taken on Oct. 5, 2020 shows the autumn scenery of Yudaokou pasture in Chengde City, north China's Hebei Province. (Photo by Liu Mancang/Xinhua)

Photo taken on Oct. 5, 2020 shows the autumn scenery of Yudaokou pasture in Chengde City, north China's Hebei Province. (Photo by Liu Mancang/Xinhua)

Photo taken on Oct. 5, 2020 shows the autumn scenery of Yudaokou pasture in Chengde City, north China's Hebei Province. (Photo by Liu Mancang/Xinhua)