Just off the East coast of Taiwan is deep water.
Submarines should have no problems hiding there. Its well within Tomahawk range of the Chinese coast.
There is deep water or allied coastal waters everywhere within range of the Chinese coast. There is nowhere for the Chinese fleet to hide. And thats just from submarines.
All potential invasion harbors are in range of Tomahawk, and then there is sub-launched Harpoon, which puts all Chinese warships or transports anywhere near Taiwan at risk.
As for ASATs, that is top secret stuff. If China can shoot down US satellites, the US can shoot down theirs, and with that goes most of the antiship ICBM threat vs carrier groups.
Anyway, the Chinese missile threats vs various US systems is speculative as all this is the stuff of technological trumps, measures/countermeasures. We have no idea what each sides toys can do to the other side, nor which weapons will be effective or ineffective. We are out of the loop.
Elon Musk, and his reusable SpaceX boosters, would be a strategic asset in any anti-satellite pissing contest.