If the research graduation thesis is published beyond the time limit, it will be delayed, but you can try to apply to the administrator to reopen the system.

If it cannot be submitted on time due to special reasons, it is generally necessary to apply to the school for an extension 1 month in advance. If you don't miss the submission time for too long, it may not have much impact. You can find a tutor to explain why you didn't submit your graduation thesis on time. If you are sincere, you may be allowed a few days.