It would be cheaper to bulldoze the warehouse and start over.

Rent a warehouse in one of the non Han dominated areas of China, where you can use all you want from the city's drinking water supply and pump all your used chemicals into the nearby river. Make sure to totally automate your robotic production line so you don't need to employ any locals.

And then spend the next five years building the actual fab around it? Like what’s the plan here.

No you're right. My math is very off.

You should deactivate your bc donation link since you admitted this