They aren't going to sail their conventional ships as anything but bait to draw in the US fleet. They'll destroy the US fleet in the Taiwan strait with autonomous weapons they dropped off on the bottom of the strait that are primed to wake up when they tell them too and waves of tens of thousands of autonomous loiter drones. Think about what a v1 buzz bomb could do with a simple embedded computer and a camera or a modified torpedo that's designed to just sit on the bottom until its told to wake up and find a target. Machine vision is good enough now that you can train it to recognize a carrier and its support ships every single time and the same can be done with acoustics for guiding underwater weapons. They wont need to control the drones remotely so they'll be immune to electronic warfare. All they have to be capable of doing is spotting the target and crashing into it. They will be cheap enough that they could launch 25,000 of them and still not even be half the price of a single carrier and if half of them got shot down successfully the fleet would be out of ammo for the remaining half. Then once they are unopposed they'll sail around with their shitty carriers that aren't great but work well enough to go fuck up everything in the region.