The attempted invasion of Ukraine by Russia just reminded people that the best war plans don't survive the first contact with the enemy (apparently stated by the Prussian general Moltke), or in the more folksy words of Mike Tyson, everyone has a plan until they get punched in the face.
In 2014, Russia achieved a military miracle: they took over Crimea so quickly and without loss of blood, that they delivered a "fait accompli". Oh, how much would China like to replicate that in Taiwan. And that's what they were preparing for.
But now, in 2022, the latest example of an attempted invasion shows that things can still go astray. Why? No doubt China will analyze everything and try to see if they are in danger of experiencing the same problems. But the overall learned lesson will still be that no matter how much you plan, you can still encounter huge obstacles when you start a war.
And the world response in terms of economic sanctions was unbelievable. Definitely, not something China wants.
If anything the prospect of WW3 because of a Chinese miscalculation vis-a-vis Taiwan went down considerably.