China have already defeated the US in two proxy wars they could have won given the weapons they possess in both Korea and Vietnam. In both cases it was the US population and elected government that surrendered. China and both Russia knows all you have to do with the US and NATO democracies less so post world war 2 is just keep them in the fight their elected populations will do the rest for you, This is also a test for Russia can they keep selling their energy to fund their war, but China has a huge need for it and they have decades of supply if not centuries counting untapped resources.
China will play the long game, their investment in their armed forces is designed to weaken the west economically as they will try to keep up , they know and understand the west is morally and productively bankrupt keeping up will ruin them economically there is no need for war. Pure Sun Tzu or the art of war. Xi already fired another warning shot when he started dumping US bonds a few months back, doest help when the country you want to have a trade war is the biggest holder of US debt, ultimately they can counter any tariff by pressuring interest rates through their bond holdings.
Economically strengthening China over the last 3 decades will ultimately prove to be the biggest own goal in the history of the US in time, it was madness to think that you would grow a non democratic country that was simply converting their new found wealth to military strength so openly. Absolute madness but consistent with those invested in government for personal benefit.