I think China deciding to go to war and then starting with a blockade is a bad idea. It cedes the initiative to Taiwan and the US.
A blockade is already acknowledged as an act of war.
Suppose the US and Taiwan spend 5 days to prepare, and then launch a first strike against China instead? It's awfully tempting because the Taiwan military is still intact.
In comparison, suppose China was to announce 12 hours of military operations solely against Taiwan and then a blockade? That would result in at least half of Taiwan's air/sea power being destroyed, and reduce the risk of a US decision to intervene. US forces are not in place.
But even then, I think too much of the Taiwanese military would still be intact, and would tempt US intervention. But if China were to conduct military operations for 3 days, I reckon 90%+ of Taiwan's air/sea power would have been destroyed.
And if China continued significant attacks for 1 week, we would start seeing Taiwan's military ground units being attacked. Plus at that point, more US forces would be available, but US intervention will not stop the collapse of Taiwan's civilian economy. The PLA will still retain enough power to enforce an effective blockade for at least 4 more weeks, and Taiwan will have run out of food, fuel and electricity by then. The US would be forced to operate large resupply missions right next to the Chinese coastline.
I just don't see China going with a blockade as the desired military option.
@Patchwork_Chimera
Any comments?