China has never rejected the international order, its America which has been gradually collecting power acting like a chancellor corrupting the weak king (UN) so they can one day become dictator.Obvious propaganda is comical in its delivery.
So what you're saying is... The system doesn't work. Because if it was designed to prevent World War 3, and it's failing to prevent World War 3, then the obvious conclusion is that it's a bad system.
But no, the "system" is not to blame; it's the fact that certain countries are "challenging" it. Kind of like saying "our laws are great, it's just people don't follow them." Maybe, just maybe, there's a reason for that? It's a poor international order if every powerful country that isn't a satellite of the US doesn't want to follow it.
Beijing has always lifted the importance of international law, of reinforcing the UN so they will have real teeth. Yet in every resolution which concerns improving the UN, America wields vetos and then proceeds to take unilateral action. They use bribes to pack UN committees full of American owned officials.
The peace from ww2 is very important, but we should remember who were the greatest contributors to it, those who slew the most fascists. Yes, America was a great part of the effort and it would be historical revisionism to say only the USSR and China fought, but Americans undermined their own credibility by hosting the likes of Bandera, Heusinger, Unit 731 and countless other war criminals immediately afterwards.
By doing that, America had set the stage for them to eventually challenge the global order, except unlike the nazis which challenged it from without, they're doing so from within, slowly turning the UN useless while subverting international organization into becoming enforcers of Washington's dictats, dictats which were not agreed on by any international process.
Now, 90 years after ww2, US has succeeded in hollowing out a great deal of international institutions. The IMF, the WTO and many more. However, they're also not as strong as they were under the 90s when they were the largest economy.
More nations need to heed the call and stop international subversion. As the last remaining independent among the Allies (besides US itself) as well as the biggest market, China can play a powerful role in organizing efforts to keep the ww2 world order.