Chinese Vice Premier Wang Yang (R) shakes hands with U.S. Secretary of Commerce Penny Pritzker during the China-U.S. Tourism Year 2016 Closing Ceremony in Washington D.C., the United States, Nov. 20, 2016. China-U.S. Tourism Year 2016 came to the end on Sunday, with officials from both countries pledging to expand tourism cooperation and enhance friendship. (Xinhua/Yin Bogu)