I understand your point, but I respectfully disagree. An internal strife alone doesn't necessarily lead to military action.

A military conflict involving Taiwan would have global implications, affecting regional stability and the world economy. Xi is fully aware of that and knows that his political power extends only as far as his economy remains stable. Looking at the last BRICS meeting, we see that China is eager to compensate for any economic embargoes with a stable structure and demand from its partners – which, as of today, is still a work in progress.

Furthermore, the Ukrainian war has shown, the West can swiftly mitigate major impacts on its economy (see Germany moving completely away from gas exports from Russia). China is aware of that too and knows that while devastating, the west will work closely together to compensate such an economic distaster and cut ties with China completly.

While the current situation requires vigilance and preparation for the worst, we can at least see that China remains in absolute need of its Western allies, and a military intervention would be a complete disaster, even for Xi.

That's likely why he's consolidating power by eliminating political opponents and critics, but history has shown that being blinded by power, as Putin is in the case of Ukraine, leads to devastation.