People walk in the snow in Riga, Latvia, Dec. 1, 2021.(Photo: Xinhua)

A cat is seen in the snow in Riga, Latvia, Dec. 1, 2021.(Photo: Xinhua)

A woman walks a dog in the snow in Riga, Latvia, Dec. 1, 2021.(Photo: Xinhua)

Vehicles are seen covered with snow in Riga, Latvia, Dec. 1, 2021.(Photo: Xinhua)