Self-resignation: simply give up the remaining salary and leave directly. Just report the return to the personnel department. The signature of the team leader indicates normal resignation.
Regarding the release notes, are you a student or a recruit in a club? Students must find a resident teacher and recruit from the community, hehe. It's just not allowed in the dormitory. There are two ways, one is to find friends, the other is to get some, and the personnel department can leave the list.