British PM Theresa May visits Yuyuan Garden in Shanghai

Theresa May, U.K. prime minister, center, and Philip May, her husband, left, walk through the Yuyuan Garden retail area in Shanghai, China, on Friday, February 2, 2018. May is leading the largest business delegation her government has ever taken overseas as she seeks to put her Brexit troubles aside and make progress on boosting U.K. trade. [Photo: VCG/Bloomberg via Getty Images/Chris Ratcliffe]