1st batch of CanSino COVIDNovel coronavirus has existed worldwide before emerging in China: Oxford University expertUrumqi takes measures to meet residents' need amid efforts to contain COVIDChina's highly anticipated C919 passenger aircraft returns after debut at Singapore AirshowInterview: IMF official warns lack of vaccination in lowWorld should act as one when it needs China to play a role in creating economic growthXinhua Headlines: China, Vietnam Lift Ties to New Stage, Aiming for Shared FutureU.S. CDC urges all Americans to wear masksSpotlight: U.S. authorities tell int'l students to leave U.S. if universities go onlineChinese, Qatari medical experts hold video conference on fighting COVID