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Vehicles pass by Harrods at Knightsbridge in London, Britain on Dec. 18, 2019. (Xinhua/Han Yan)
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Christmas lights are seen on Carnaby Street in London, Britain on Dec. 18, 2019. (Xinhua/Han Yan)
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Shoppers pass by a shop window of John Lewis on Oxford Street in central London, Britain on Dec. 18, 2019. (Xinhua/Han Yan)
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People admire Christmas lights hanging on Carnaby Street in London, Britain on Dec. 18, 2019. (Xinhua/Han Yan)
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Christmas lights are seen on Regent Street in London, Britain on Dec. 18, 2019. (Xinhua/Han Yan)
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Christmas lights are seen on Regent Street in London, Britain on Dec. 18, 2019. (Xinhua/Han Yan)