The so-called non-disclosure means that if the victim requests to participate in the trial or file a criminal incidental civil lawsuit, people other than the participants in the lawsuit can participate in the trial.
Cases that are not tried in public shall be pronounced in public.
Prosecutors generally don't instigate defendants to retract their confessions. They are accused of a crime, and generally hope that the defendant will be found guilty and sentenced to a heavier sentence.
I hope my answer can help you.
Your friend, lawyer Zhao Li from China Criminal Defense Network.