A pedestrian walks past a snow-covered Christmas tree in Berlin, capital of Germany, Dec. 9, 2021.Photo:Xinhua

A bus arrives during snowfall in Berlin, capital of Germany, Dec. 9, 2021.Photo:Xinhua

Pedestrians walk at a snow-covered park in Berlin, capital of Germany, Dec. 9, 2021.Photo:Xinhua

Birds forage at a snow-covered park in Berlin, capital of Germany, Dec. 9, 2021.Photo:Xinhua

A woman and a child build a snowman at a park in Berlin, capital of Germany, Dec. 9, 2021.Photo:Xinhua