Scenery of snow-covered Helan Mountain National Nature Reserve in N China

This aerial photo taken on Feb. 17, 2023 shows a view of the snow-covered Helan Mountain National Nature Reserve in Araxan Left Banner, north China's Inner Mongolia Autonomous Region. (Xinhua/Bei He)

This aerial panorama taken on Feb. 18, 2023 shows a view of the snow-covered Helan Mountain National Nature Reserve in Araxan Left Banner, north China's Inner Mongolia Autonomous Region. (Xinhua/Bei He)

This photo taken on Feb. 18, 2023 shows deer at the Helan Mountain National Nature Reserve in Araxan Left Banner, north China's Inner Mongolia Autonomous Region. (Xinhua/Bei He)

This aerial photo taken on Feb. 18, 2023 shows deer at the Helan Mountain National Nature Reserve in Araxan Left Banner, north China's Inner Mongolia Autonomous Region. (Xinhua/Bei He)

This aerial photo taken on Feb. 18, 2023 shows a view of the snow-covered Helan Mountain National Nature Reserve in Araxan Left Banner, north China's Inner Mongolia Autonomous Region. (Xinhua/Bei He)

This photo taken on Feb. 18, 2023 shows deer at the Helan Mountain National Nature Reserve in Araxan Left Banner, north China's Inner Mongolia Autonomous Region. (Xinhua/Bei He)