Photo taken on Dec. 24, 2020 shows a window of a closed shop in Rome, Italy. In Italy, regulations in force through Christmas and New Year's Day prohibit non-essential travel beyond 30 km from home or between regions. Restaurants and bars are asked to close by 6 p.m., with a nationwide curfew taking effect in four hours.Photo:Xinhua

A woman wearing a face mask rides an electric scooter in front of a closed shop in Rome, Italy, Dec. 24, 2020. In Italy, regulations in force through Christmas and New Year's Day prohibit non-essential travel beyond 30 km from home or between regions. Restaurants and bars are asked to close by 6 p.m., with a nationwide curfew taking effect in four hours. Photo:Xinhua

Shops on Via dei Condotti are closed in Rome, Italy, Dec. 24, 2020. In Italy, regulations in force through Christmas and New Year's Day prohibit non-essential travel beyond 30 km from home or between regions. Restaurants and bars are asked to close by 6 p.m., with a nationwide curfew taking effect in four hours. Photo:Xinhua

A man jogs at Villa Borghese in Rome, Italy, Dec. 24, 2020. In Italy, regulations in force through Christmas and New Year's Day prohibit non-essential travel beyond 30 km from home or between regions. Restaurants and bars are asked to close by 6 p.m., with a nationwide curfew taking effect in four hours.Photo:Xinhua

People walk their dogs at Villa Borghese in Rome, Italy, Dec. 24, 2020. In Italy, regulations in force through Christmas and New Year's Day prohibit non-essential travel beyond 30 km from home or between regions. Restaurants and bars are asked to close by 6 p.m., with a nationwide curfew taking effect in four hours.Photo:Xinhua

A woman wearing a face mask walks past Piazza di Spagna in Rome, Italy, Dec. 24, 2020. In Italy, regulations in force through Christmas and New Year's Day prohibit non-essential travel beyond 30 km from home or between regions. Restaurants and bars are asked to close by 6 p.m., with a nationwide curfew taking effect in four hours.Photo:Xinhua

Photo taken on Dec. 24, 2020 shows an empty street in Rome, Italy. In Italy, regulations in force through Christmas and New Year's Day prohibit non-essential travel beyond 30 km from home or between regions. Restaurants and bars are asked to close by 6 p.m., with a nationwide curfew taking effect in four hours.Photo:Xinhua

A Carabinieri car is seen at Passeggiata del Pincio in Rome, Italy, Dec. 24, 2020. In Italy, regulations in force through Christmas and New Year's Day prohibit non-essential travel beyond 30 km from home or between regions. Restaurants and bars are asked to close by 6 p.m., with a nationwide curfew taking effect in four hours.Photo:Xinhua