After eight years, RTVU's student status expired, and it could not be renewed, so it had to re-apply for registration in electronic student status. Electronic student status has been preserved for eight years, that is to say, all the courses of the Open University of China will be completed within eight years, and eventually it will graduate from the university smoothly. If you don't graduate from national cheng kung university within eight years, your electronic student status will be automatically revoked.