I thought the way the island is set up is that is that it was very difficult to make an initial amphibious push on the island with a few chokepoints that made d

I thought the way the island is set up is that is that it was very difficult to make an initial amphibious push on the island with a few chokepoints that made defending it much easier for Taiwan that one might expect. And if China DID manage to break through one of those points the Island was effectively lost.