Fun watching the Frankenstein mob assemble here. Grab your torches & pitchforks lets get the monster (China)!
You can use isolation and trade as weapon against countries like Iran, Syria, etc. because they have no consumer economy and their people are shut off from exposure to the real world (no internet, outside travel, etc.). If you use isolation strategies with China, it will backfire on the US.
China is a socialist country run by the communist party and party leaders are in a real dilemma. They are in the process of transforming from an agriculture based & agrarian culture and economy, to that of an industrialized nation. They have a huge and rapidly growing consumer based economy and what they need are jobs to support this move to an industrialized economy.
China also has the largest deposits in the world of rare earth minerals which are critical for Hi-tech production ... think computer memory & processing chips, LEDs, rechargeable batteries, flat screen TVs, cell phones, etc. They mine 10 times the volume of rare earth minerals that the US & Australia do and we are both a distant #2 & 3 in production.
If you shut off and isolate China, you can not help & manipulate the internal push by their people to democratize the country. By doing business with and in China, we gain valuable intelligence as to what is going on there and have leverage in their economy by the jobs & factories we have there. China needs the US just as much as we need them.
There is an old saying ... keep your friends close but keep your enemies closer. We have leverage with China and Trump understands this.