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A boy and his mother look at the tributes of flowers and cards at the Gate of Kensington Palace on the 20th anniversary of the death of Princess Diana in London, Britain on Aug. 31, 2017. (Xinhua/Han Yan)
A boy and his mother look at the tributes of flowers and cards at the Gate of Kensington Palace on the 20th anniversary of the death of Princess Diana in London, Britain on Aug. 31, 2017. (Xinhua/Han Yan)