So now calm down. NOBODY is coming to claim anything, neither USA or Australia.
I know you can turn “sand into glass”. Maybe even Norwegian mountains into glass for all I know??
The problem is that you’ll kill yourselves in the process as well.
Neither China, Russia or anybody else is threatening an attack on USA. (Unless you believe that North Korea is actually stupid enough to do so??)
The only good thing with nuclear weapons is that they are too destructive to actually use. Nobody is likely to be stupid enough to start a nuclear war as long as it is “mutually assured destruction” for all. (MAD)
Taiwan will eventually reunite with the mainland, but in a peaceful process that is already under way. The island have been occupied by the Portuguese and the Japanese, but have always returned to China eventually. That USA will risk a full scale war with China to stop that is ludicrous, even if Chine should use force. (Which is unlikely)
But you are right on one point; China is smart. Too smart to risk a war with USA, unless attacked militarily.
Trade war is an entirely different matter. But only if forced on them, since nobody win a trade war and China is a trading nation.
There is one thing that is forgotten in all the hype; If USA is a big enough economy to manage without external trade, so is China. Both need outside sources for raw materials though, That can result in proxy wars to control the sources of essential supplies, such as Cobalt, Lithium etc.