After graduation, the household registration will be moved back to the rural origin (it is best for experienced good people to answer in detail, thank you in advance! )

If nothing else, just move the account:

There is no problem if you want to move back to your original household registration, just say that you have not found a receiving unit and let your hometown police station issue a permit to move. You can take this permit to the police station where the school is located and move out. Generally speaking, the file is attached to your household registration, but it is ok if you hold the file yourself.

It's hard to say when looking for a job in the future. Now the concept of hukou is fading, but it can't be faded immediately. Think about it yourself.