Highlights of 2018 National Restaurant Association show in Chicago, U.S.

A staff member distributes food samples at the 2018 National Restaurant Association (NRA) show in Chicago, the United States, on May 21, 2018. The 2018 National Restaurant Association (NRA) show is held from May 19 to May 22 in Chicago, attracting over 2,000 exhibitors in the exhibition this year. (Xinhua/Wang Ping)