After you pick up the car in full and purchase insurance, and pay the vehicle purchase tax, vehicle and vessel tax and other taxes and complete the registration, you can go directly to the vehicle management department to receive the big green book.
If it is a loaned car, after the loan is repaid, the company will issue settlement procedures, release procedures, give you the principal, and then go to the vehicle management office to cancel the mortgage.
Only with the big green book in hand, the ownership of the vehicle truly belongs to you.