However, China doesn't need to threaten an invasion to do this. There is no reason China can't relinquish their claim on Taiwan and just build a casual trade relationship with Taiwan.
Not justifying China's methods or intentions at all, but you know what you are claiming is impossible
The USA can (and has before) forbidden third parties to run businesses with other countries... As they have already done to China itself.
It would be completely naive for China to assume they won't be cut off from the very valuable industry Taiwan has once the USA establishes itself as the sole/mayority buyer
On road trips, I started telling my kids stories to make the trips more fun. They are big kids now but the tradition prevails which is now some serious work for me (I have to basically write an essay before each trip so I remember enough details to not butcher the stories) but I love it and love that they love it.
My wife, instantly falls asleep when I start the stories... it's like a super power at this point. I am certain if I ever get in trouble with her, I can just start a story and she'll be deep asleep in 30 seconds allowing me to escape hehehehehe