On October 30, affected by the snowfall, Maduo area, the source of the Yellow River, was covered with snow, which was like a fairyland on earth. Due to the snow covering the pasture, the Tibetan wild ass population unique to the Qinghai Tibet Plateau searches the sunny hillside for food through long-distance migration. The white snow mountain, the Tibetan wild donkeys running in groups, and the plateau black yaks looking for food are like "black pearls" scattered in the silver plate, becoming a landscape. (The picture shows a lake covered with snow.) (The picture shows an aerial photo of the lake at the source of the Yellow River.) (The picture shows the white snow mountain.) (Liu Xinshe)