A US China war? Why? The US has no desire to take China and probably couldn't even if it wanted to. The idea is daft.
The opportunity for small scale incursions and a serious fight over Taiwan is unlikely.
The US would destroy Chinese capabilities within weeks although with some serious losses that would galvanise the US population both left and right.
China definitely doesn't want that.
At the moment the US populace is fighting amongst itself over BLM, the Police, Religion, Guns, Pronouns and Abortion.
The Chinese don't need to get involved, they have more than enough to deal with internally as well as investments that haven't worked out including Afghanistan, N Korea and African pilfering and reneging on contracts.
Plus 60% of the Chinese population is poor - very poor, in fact poorer that the population of Africa and that is going some.
It could be said that the US needs a war with China or at least some proper skirmishes more than the Chinese do.