To reach Taiwan with Ground Troops, they need large ships and planes, all of which require Gasoline (not to mention civilian vehicles/civilian economy, and life needing Gas as well).
We have shut down 40% of their Gas intake with our control of the Strait of Hormuz in Iran. Venezuela's Gas also contributed a significant portion of its supply as well.
With China now reliant on Gas sources that are effectively controlled by the US or by Russia (an ally that they have already demonstraited to their unwillingness to hold up their end of the deal with partnerships. As we saw with China's thoughts and meaningless words support to Ven / Iran).
Trump has done something no other leader with China has been able to do since we offshored all of our production to them. We have actual, real, tangible, effective, and destructive LEVERAGE over China.
China in general has been seeing unrest (with all but a few generals in the military being ""dissapeared" within the last 2 years), economy in shambles (with youth unemployment being so bad they stopped reporting. The Youth now pay for "fake jobs" to pretend to work), US reshoring production to themselves or allied countries (only sped up further with China's practice of holding assests hostage when a company attempts to leave and stealing IP. Why else do you think Tim Cook in on the plane.)