1. It's civilian, commercial shipbuilding capacity. It's of limited use in the event of war. You can't go to them and tell them to build you a supercarrier or attack submarine, they don't know how and they have wrong equipment. They can cobble together some lesser types of military ships, but still only a small fraction of that capacity.
2. If you are going to argue that it is very important for a war, well then, you should have let us all know that 2 major US allies in Pacific do as much commercial shipbuilding as China in order to not look like you are conveniently omitting relevant information to keep your defeatist narrative intact.
There is a difference between nuclear missiles and conventional military forces, smartass, stop with the omission abuse, by now you should have noticed it doesn't work on me.
How did USA deal with Soviet and Chinese conventional forces in Cuba?
Not at all, besides some complaining about it.
So we have it established form Cold War, USA is free to base conventional military forces on the borders of Russia, any problems?
Independent enough to do utterly retarded things like kowtowing to China and paying islamic terrorists for being held by USA, so lay off the leftist propaganda about evul western empires, this shit was made up by retarded leftists, they aren't cool and neither are their convictions about the order of the world.
1) Skills are transferable. That shipyard worker who works building a transport ship has the skills to build a destroyer.
The current set of carriers are being built at a shipyard which was producing bulk transport ships. And unlike the USA, china has an end to end manufacturing chain. Civilian shipyards also increase the ability to maintain ships, refit ships and build support vessels as well.
China is going to be putting over 100! Modern BLUEWATER SHIPS into the sea over the next 10-15 years. This will include aircraft carriers, one class of which will mass 110,000 tonnes. They have also started producing subs that are actually good now as well.
China is also ahead in hypersonic anti shipping missiles.
2) Okay, lets take a look at this for a moment.
If shit hits the fan, do you think Korea is going to spend its resources building ships for the USA? No. If it gets involved, Its going to be busy fighting off the Chinese and NK armies swarming down the peninsula.
3) When the Soviets based missiles in Cuba, it nearly lead to war. A few 'advisors' isnt going to be an issue, because they cant actually do anything. Now, what will you do if the russians and chinese start work to put cruise missiles, fighters and a naval base into Cuba?
4) Until you start understanding that you dont live in 1992 anymore, that you cant simply blow shit up and dictate terms to everyone you will march yourselves into disaster after disaster. Since the fall of the USSR Western diplomacy (really, American diplomacy since the rest of the former west are just vassal states) consists of making demands for unconditional obedience then punishing those who do not submit. Negotiations occur only between the various members of the post-western ruling class about what the content of those demands will be. If the demands arent met, punishment ensues. If punishment doesnt work, they double and redouble until unconditional submission occurs or the system breaks.
The only time negotiation is sought, is when the Empire believes it has a disadvantage. Then it negotiates in bad faith, only seeking to buy time to renew punishments and hostilities. There is no recognition of mutual interests, spheres of influence, or give and take. Only Submission and unconditional surrender.
There is a seamless continuum of behaviour in how the Empire treats a dissident podcaster, to how they treated the truckers, to how they are treating trump, to how they are conducting affairs with Russia and China. Unconditional compliance and surrender, or scorched earth.
Your ruling class are poorly educated degenerate parasites that have no connection with the majority population and who hate you so much they are actively importing a more biddable and pliable population to disenfranchise you forever. Thier wars are for thier benefit, not yours.