While I don't trust the CCP a bit, I also doubt that China is pursuing bioweapons research, for the same reason: a bioweapon is too likely to backfire. If the covid-2 virus came from a lab in Wuhan, it's not because they were pursuing it as a potential bioweapon, it's because they--and others--wanted to understand how to protect against it.
https://en.wikipedia.org/wiki/Fort_Detrick#2019_closure_and_...