I think it's not exactly like that. There was a virus database that was taken offline a while before the outbreak and that they refuse to share to this day. After the outbreak the Chinese government asked for the destruction of covid samples. More recently Daszak said Shi Zhengli had a personal virus database but had deleted it.

Overall they have not been very cooperative with data. But it seems the lab does covert military bioweapons type research so they may have reason to be secretive about everything without actually having caused covid.