A visitor buys food during the 2018 Taste of Chicago at Grant Park in Chicago, the United States, July 11, 2018. The five-day annual festival kicked off on Wednesday in Chicago. (Xinhua/Wang Ping)

A cook makes hot dog during the 2018 Taste of Chicago at Grant Park in Chicago, the United States, July 11, 2018. The five-day annual festival kicked off on Wednesday in Chicago. (Xinhua/Wang Ping)

A restaurant staff pours sauce on the ribs during the 2018 Taste of Chicago at Grant Park in Chicago, the United States, July 11, 2018. The five-day annual festival kicked off on Wednesday in Chicago. (Xinhua/Wang Ping)

Food lovers participate in the 2018 Taste of Chicago at Grant Park in Chicago, the United States, July 11, 2018. The five-day annual festival kicked off on Wednesday in Chicago. (Xinhua/Wang Ping)