Now the Tsai trip to the USA is over it is clear what took place. Biden administration-PRC made a deal to make this trip very low-key at the expense of Tsai and McCarthy. When Tsai was "transiting" through NYC, the NYC mayor and NY governor did not show up even though all other ROC Prez "transit" through NYC since the 1990s almost have one of them if not both show up. Tsai did not meet anyone from the Biden administration. The Tsai-McCarthy meeting was very low key and that seems to be mostly a Tsai decision. The Biden administration must have put pressure on Tsai to keep that meeting low-key so
McCarthy cannot score any political points.
Given what the Biden administration has done I expect PRC soon to respond to USA's desires for a Biden-Xi call as well as a Yellen visit to PRC. I am sure the purpose of such a Yellen trip will be to say to the PRC "I know you are selling treasuries, in the summer we will have a USA debt limit crisis in a political battle against the GOP, and we need you to stop selling during that period which could make the crisis worse"
Well, I wish Yellen the best of luck for her PRC trip.