The part that a lot of people miss in regard to a Chinese invasion of Taiwan is the incredible scale of sea lift that would have to be applied. The last major amphibious invasion of that scale was Inchon. That’s more than 70 years ago.
Getting the troops across great distances of water is a skill set that is owned, right now, by one nation: The US.
Now, add in the advances in anti-ship missile defense and the idea of a sea borne invasion of Taiwan becomes less and less realistic.
Here's the story: Navy’s newest amphibious assault ship relocating to Japan
Source - Stars and Stripes