To settle in Beijing, you need a graduate degree or above. Freshman went abroad and went back to school. If you graduate, the school will send your account to your hometown. You can ask the local police station again. They can find your account. It's best not to be in school, or they will ask you what storage fee you want.
Besides, it may be more troublesome to settle down in Beijing. Please go to the website of the Study Abroad Service Center of the Ministry of Education to inquire about relevant materials and procedures.
But first you have to notarize your education. Maybe you do.