A snow sweeper is frosted up while removing snow from a road in Changchun, capital of northeast China's Jilin Province, Nov. 17, 2019. Some 14,000 sanitary workers and 3,000 vehicles are dispatched to clear the snow. (Xinhua/Yan Linyun)

Snow sweepers remove snow from a road in Changchun, capital of northeast China's Jilin Province, Nov. 17, 2019. Some 14,000 sanitary workers and 3,000 vehicles are dispatched to clear the snow. (Xinhua/Zhang Nan)

A snow sweeper removes snow from a road in Changchun, capital of northeast China's Jilin Province, Nov. 17, 2019. Some 14,000 sanitary workers and 3,000 vehicles are dispatched to clear the snow. (Xinhua/Yan Linyun)

A sanitation worker carts away garbage during snowfall in Changchun, capital of northeast China's Jilin Province, Nov. 17, 2019. Some 14,000 sanitary workers and 3,000 vehicles are dispatched to clear the snow. (Xinhua/Yan Linyun)

Aerial photo taken on Nov. 17, 2019 shows snow sweepers removing snow from a road in Changchun, capital of northeast China's Jilin Province. Some 14,000 sanitary workers and 3,000 vehicles are dispatched to clear the snow. (Xinhua/Zhang Nan)