Kids play "Trick or Treat" at their neighbours' house celebrating Halloween in London, Britain, on Oct. 31, 2016. (Xinhua/Han Yan)
A tree in front of a house is decorated forthe Halloween in London, Britain, on Oct. 31, 2016. (Xinhua/Han Yan)
Kids play "Trick or Treat" at their neighbours' house celebrating Halloween in London, Britain, on Oct. 31, 2016. (Xinhua/Han Yan)
Kids play "Trick or Treat" at their neighbours' house celebrating Halloween in London, Britain, on Oct. 31, 2016. (Xinhua/Han Yan)
Pumpkins in front of a house are decorated for the Halloween in London, Britain, on Oct. 31, 2016. (Xinhua/Han Yan)
