Photo taken on August 12, 2012 shows the art performance at the Closing Ceremony of the London 2012 Olympic Games at the Olympic Stadium in London, Britain. (Xinhua/Wang Qingqin)
Jacques Rogge, President of the International Olympic Committee, delivers a speech at the Closing Ceremony of the London 2012 Olympic Games at the Olympic Stadium in London, Britain, August 12, 2012. (Xinhua/Wang Qingqin)
Photo taken on August 12, 2012 shows the art performance at the Closing Ceremony of the London 2012 Olympic Games at the Olympic Stadium in London, Britain. (Xinhua/Wang Qingqin)
Photo taken on August 12, 2012 shows a phenix flying up from the Olympic cauldron at the Closing Ceremony of the London 2012 Olympic Games at the Olympic Stadium in London, Britain. (Xinhua/Wang Qingqin)
Photo taken on August 12, 2012 shows the performance of the Rio 2016 artistic segment at the Closing Ceremony of the London 2012 Olympic Games at the Olympic Stadium in London, Britain. (Xinhua/Wang Qingqin)
Photo taken on August 12, 2012 shows fireworks displayed at the Closing Ceremony of the London 2012 Olympic Games at the Olympic Stadium in London, Britain. (Xinhua/Shen Bohan)