Melania Trump and Peng Liyuan on Thursday toured one of the largest Asian art museums in the United States, celebrating cultural ties between the U.S. and China during a high-profile diplomatic visit to Washington.Leaving their husbands behind at the White House, the first ladies visited the Smithsonian’s National Museum of Asian Art in a display of soft power that united two figures known for fusing style and diplomacy. It was the first public meeting in nearly a decade between the spouses, one a former fashion model and the other a famed soprano.