In Korea, if you can't finish your thesis and get a diploma, there are only three options: one is to retake the exam for one year, and then pay one year's tuition to rewrite your graduation thesis, provided, of course, that your tutor allows you to rewrite it. Second, if the school doesn't require you to retake, you can only get a college diploma. Think about it, you have neither a degree certificate nor a diploma. If you can't be certified by the Ministry of Education after returning to China, you will study abroad for nothing. Still have to find a way to get the diploma and degree certificate, so as not to waste your life and time. Third, if you can't finish your thesis, you can apply to your tutor for an extension of your defense, which will not affect your graduation.