LONDON,  UNITED KINGDOM - OCTOBER 20:  Queen Elizabeth II and President of The People's Republic of China, Xi Jinping, ride in the Diamond Jubilee State Coach along The Mall after the ceremonial welcome on Horse Guards Parade for the Chinese President on the first day of his state visit to the UK on October 20, 2015 in London, England. The President of the Peoples Republic of China, Mr Xi Jinping and his wife, Madame Peng Liyuan, are paying a State Visit to the United Kingdom as guests of The Queen.  They will stay at Buckingham Palace and undertake engagements in London and Manchester. The last state visit paid by a Chinese President to the UK was Hu Jintao in 2005.  (Photo by Yui Mok  - WPA Pool/Getty Images)