LONDON, UNITED KINGDOM - OCTOBER 20: Members of the cavalry parade down the Mall during the visit of China's President Xi Jinping 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 Toby Melville - WPA Pool/Getty Images)
WASHINGTON, DC - JUNE 23: (L-R) Chinese Vice Premier Wang Yang, Chinese Vice Premier Liu Yandong, and U.S. Secretary of the Treasury Jacob Lew, after they participated in a family photo during the Strategic and Economic Dialogue (S&ED), and Consultation on People-to-People Exchange (CPE) June 23, 2015 at the State Department in Washington, DC. Officials from both countries participated in the seventh annual U.S. - China Strategic and Economic Dialogue to discuss bilateral issues. (Photo by Alex Wong/Getty Images)