China and the US were supposed to hold diplomatic talks over the weekend. Instead they sparred over a Chinese balloon that entered American airspace before it was shot down. Where do relations between Washington and Beijing go from here?This wasn't the first time a Chinese surveillance balloon flew into into U.S. airspace. NPR's Greg Myre talks us through past incidents.Then we speak with Jessica Chen Weiss, a professor of China and Asia Pacific Studies at Cornell University, about where U.S. and China relations now stand.