I'd argue that China's belligerence is lower now than it has been. They've moved from a very communist that strongly distrusted and arguably even hated the West, to a semi-capitalist one who mostly just wants to compete with the West (and makes oodles of $$$ selling to us).
The US has been drum-beating against China a lot recently, but frankly that seems more about the US losing in the "trade wars" than anything specific China did.