China was afraid of Trump going to war not so much with Biden so this makes perfect sense. We will see Iran, Russia and North Korea threaten more while European countries offering more support.
I thought the standard argument was that demopublicans (ya know that publican thing ain’t nothing to brag about lol) aka bipartisans all agreed that the foreign war gig was good . Trumpian inconsistency ensures that a well timed Sabre rattle is perceived as indigestion. I doubt that emperor Xi was concerned. They know a thing or two about the futility of walls unlike our homegrown lot who still believe in King Santa Grinch
bipartisan support is not for wars, it's for military conflicts, meaning wars that has no impact on Americans directly(outside of the conflict zone) a war with a major army will affect Americans, so it has no support of a cynical political class.