The satisfied condition is: 1, and I didn't sign a work unit after graduation.
Don't apply for returning to your original employment place after graduation.
To meet these two points, you can put your hukou and files in school custody.
However, some schools do not allow graduates to register, so you can apply to the employment office of the school, then go to the talent center of the city where you want to put the files, then go to the school to apply for a registration card, and finally go through the relevant settlement procedures with the registration card.
So it's best to ask whether the school will keep your account and file for you before graduation.
But once you sign the tripartite agreement, the school will put your file account in the location of the corresponding company, because it can be recorded in the employment rate of the school.