Photo taken on Jan 8, 2018 shows scenery of the Suyukou scenic spot after snow on Helan Mountain, Yinchuan, capital of Northwest China’s Ningxia Hui autonomous region. [Photo/Xinhua]

Photo taken on Jan 8, 2018 shows scenery of Helan Mountain after snow in Yinchuan, capital of Northwest China’s Ningxia Hui autonomous region. [Photo/Xinhua]

Photo taken on Jan 8, 2018 shows scenery of the Suyukou scenic spot after snow on Helan Mountain, Yinchuan, capital of Northwest China’s Ningxia Hui autonomous region. [Photo/Xinhua]

Photo taken on Jan 8, 2018 shows the Baisikou twin pagodas after a snowfall on Helan Mountain on the outskirts of Yinchuan, capital of Northwest China’s Ningxia Hui autonomous region. [Photo/Xinhua]