Aerial photo taken on Oct. 27, 2021 shows the Yellow River in Guide County, northwest China's Qinghai Province. (Photo: Xinhua)

Photo taken on Oct. 28, 2021 shows the scenery of Qunjia National Forest Park in northwest China's Qinghai Province. (Photo: Xinhua)

Aerial photo taken on Oct. 27, 2021 shows the Danxia landform scenery in Guide County, northwest China's Qinghai Province. (Photo: Xinhua)

Photo taken on Oct. 28, 2021 shows the scenery of Qunjia National Forest Park in northwest China's Qinghai Province. (Photo: Xinhua)