Photo taken on Dec. 3, 2021 shows Saint Basil's Cathedral in Moscow, Russia.Photo:Xinhua

A girl enjoys a carousel at a Christmas fair in Red Square in Moscow, Russia, on Dec. 3, 2021.Photo:Xinhua

A young woman poses for a photo at a Christmas fair in Red Square in Moscow, Russia, on Dec. 3, 2021.Photo:Xinhua

A young woman poses for a photo on the GUM ice rink in Red Square in Moscow, Russia, on Dec. 3, 2021.Photo:Xinhua

Photo taken on Dec. 3, 2021 shows Saint Basil's Cathedral in Moscow, Russia.Photo:Xinhua

A gift shop seller shows a souvenir to customers at a Christmas fair in Red Square in Moscow, Russia, on Dec. 3, 2021. Photo:Xinhua

People cheer at a Christmas fair in Red Square in Moscow, Russia, on Dec. 3, 2021.Photo:Xinhua

A woman wearing a face mask walks past a decorated Christmas tree in Red Square in Moscow, Russia, on Dec. 3, 2021. Photo:Xinhua

A young man stands on the GUM ice rink in Red Square in Moscow, Russia, on Dec. 3, 2021.Photo:Xinhua