U.S. urged to stop mistreatment of Chinese studentsObjection to ceaseChina Focus: Vibrant festival highlights cultural charm of various Chinese ethnic groupsXi sends congratulatory message to 37th AU SummitXi encourages more U.S. youths to visit ChinaXi replies to letter from Iowa's Muscatine High School studentsOutlook positive as ChinaNation to advance pilot FTZs' openingG20 not a platform for resolving geopolitical struggles and security issues: Chinese FMNew hypersonic wind tunnel 'most advanced in world'