China would be a dead state if they tried. The problem would be that the Chinese military is actually too weak to invade Taiwan. They could send a LOT of boats, yes. And the antiship missiles we’ve fed to Taiwan, and those they have produced would decimate that fleet and kill hundreds of thousands of Chinese soldiers. They’d be dealing with revolution at home, have a crippled navy, and be cut off from the international trade system as every approaching vessel is targetd from hundreds of miles away.

Also, all those mega structures? The massive infrastructure expansion, the pipelines to Russia? Yeah those are nice targets. And all perfectly valid to destroy in a defensive war against an aggressor.

Yes, Taiwan can reach Beijing with missiles powerful enough to level skyscrapers and factories alike.