The genie is more or less out of the bottle on that one. If it is a lab leak there is no stopping it from happening again and China is not doing anything special. There are hundreds of these labs all over the world, they have containment breaches all the time [1], and given the way of international politics it is effectively impossible to shut them all down. Probably undesirable as well given that labs like those are the reason we had the medical knowledge to create a vaccine.
[1] https://en.m.wikipedia.org/wiki/List_of_laboratory_biosecuri...