And yeah, maybe China doesn't wanna think that way, but let's find out first, and second find out why.
On the other hand there are some great ways to think about this politically. If by "we" you mean the U.S. we don't really have a leg to stand on as far as respect from the international community right now anyway, so any fight we bring to China is basically one on one.
Other countries besides the U.S. would be able to wring significant concessions from China if they chose to a) believe collectively that it was China's malfeasance that caused the pandemic, and b) stood together to demand a response.
It’s either from wild animals, it was an accident, or it was spread with malice. In all scenarios we already have procedures around gain of function research, limiting interaction with animals in markets and biological weapons, respectively.
If the prevailing theory was that it came from an asteroid that would be interesting.
I personally doubt China would pay anything even if it was a lab accident. I guess we’ll see.