Suppose they built their military like to do their infrastructure. The US has nothing to worry about.
you can find failed projects for the US or any other country like that.
Odds are their a good number of components in your computer that come from China. They are strong in DRAM packaging, circuit board assembly, power supplies, and fans of all types. Noctua's are Chinese manufactured these days.
China has what it needs to get local superiority at and around Taiwan for a time. The USN will be forced back into blue water hit and run strikes, where China's boats don't have the endurance to follow. The airspace is the same, China has the numbers to achieve local superiority, and F-22s out of Japan and the Philippines are going to do a lot of damage but China has thousands of aircraft for them to kill, it will take them time to change matters over Taiwan.
Unless Japan/South Korea intervene directly Taiwan will likely have to stand and fight for several weeks.
*the US navy is designed for endurance, speed, defending aircraft carriers, and to sailing the ocean blue for months at a time. China, Japan, South Korea, they don't need to do that. Ton for Ton a South Korean or Japanese ship is just going hit harder and defend itself better then its US equivalent.