How do the families of criminals know the exact situation after being sentenced?

1. Criminals will be sent to prison to serve their sentences after being sentenced, and the prison will inform their families of the specific location by letter.

2. Prisoners can write home at any time, or call home to introduce their life through the "home phone" set up by the prison.

3. Close relatives can apply for meeting on the day of the meeting.

4. If you don't feel comfortable approaching, you can also learn about the situation from the police.