Citation??
Not TSMC specifically, Taiwan, but they are an island nation so if they get surrounded they can’t export
They weren’t blockaded though, so they can still export at this point (and maybe PRC ships are not there anymore anyway)
As far as I know, nothing of this sort of happened.
As far as I know, the videos posted of the PLA's combats by official sources during the visit were nothing but their regular exercises, as they had some PLA foundation anniversary.