Recall from that 2005 Chinese white paper/speech that they want to see us Forded up without getting slagged themselves. Given they consider troop assets as expendable materials, resupply might not be a big issue, just get enough in on the first covert wave to muck up the place, maybe use the chaos to release a more potent biological.
They did conclude that they could eat up to 600-800 million casualties and be good with it as long as the party survived...
The problem with that plan is we have read it also and the President ain’t some Ivy League pu$$y nor will the vast majority of the population of this country be in the darkness re: the PRC when this shakes out.