A photo taken on Oct 10, 2021 shows the snow-covered Nanshan Ecological Park in Pingliang, Northwest China's Gansu province. Cold air brought snow to Pingliang, Longnan and Dingxi in the province on Sunday. (Photo: Xinhua)

A photo taken on Oct 10, 2021 shows the snow-covered Guanegou scenic spot in Longnan, Northwest China's Gansu province. (Photo: Xinhua)

A photo taken on Oct 10, 2021 shows the snow-covered Guanegou scenic spot in Longnan, Northwest China's Gansu province. (Photo: Xinhua)

A photo taken on Oct 10, 2021 shows a building in snow at Nanshan Ecological Park in Pingliang, Northwest China's Gansu province. (Photo: Xinhua)

A photo taken on Oct 10, 2021 shows Liuhu Park in snow in Pingliang, Northwest China's Gansu province. (Photo: Xinhua)

A photo taken on Oct 10, 2021 shows snow-covered terraced fields in the Anding district of Dingxi, Northwest China's Gansu province. (Photo: Xinhua)

A photo taken on Oct 10, 2021 shows snow-covered terraced fields in Anding district of Dingxi, Northwest China's Gansu province. (Photo: Xinhua)