Photo taken on Dec. 30, 2016 shows the Shard in fog in London, Britain. (Xinhua/Han Yan)
Photo taken on Dec. 30, 2016 shows the Tower Bridge in fog in London, Britain. (Xinhua/Han Yan)
People walk on the street as the Tower Bridge in fog in London, Britain, on Dec. 30, 2016. (Xinhua/Han Yan)
