Mark Magnier, Teresa Elena Frontado, Dewey Sim, Lucy Quaggin As US PresidentDonald Trumplanded back in Washington on Friday after his two-day summit in Beijing with Chinese PresidentXi Jinping, a quick US assessment on one of the most consequential diplomatic visits of Trump's presidency was: impressive optics, trademark flawless Chinese hosting, but disappointing concrete achievements, according to analysts, industry trade groups and former US officials.