Most believe that it didn't, but rather that it was in the human population a few months before we knew. But maybe not.
https://en.wikipedia.org/wiki/Biosafety_level#Biosafety_leve...
What would be the punishment if they were caught not following procedures? Would they publicly punished or would the embarrassment for the Chinese government be quietly swept under the rug?
A commonly used hierarchy is "ERICPD", from most to least effective: Eliminate, Reduce, Isolate, Control, PPE and Discipline
Both labs in Wuhan have had accidental contamination incidents while collecting field samples in caves. Working with hazardous materials is always dangerous, and history has no shortage of lessons to teach us.
https://www.washingtonpost.com/context/read-the-state-depart...
Note part 6.
Maybe you can enlighten me.