The registration fee for the self-study exam is 8,000 yuan, which is valid for 8 years, but if you don't finish all the subjects in four years, your grades will all be cleared. The average score must reach 70 points, and you must pass the Tianjin degree English test and graduation thesis defense before you can apply for a degree, otherwise you can only get a diploma. This is a normal self-study exam, which is more difficult. 80 yuan (or 30 yuan, I can't remember) is the registration fee for single-subject exams.

Civil Aviation University and College of Continuing Education also have undergraduate courses in mechanical engineering. You need to pass the entrance exam and the score line to be admitted. It takes two and a half years, but it needs classes, but the exams during classes are better. Then, I usually get 75 points. Finally, take three main exams, pass the Tianjin degree English exam, and you can apply for a degree if your thesis defense is above good. Otherwise, I only have a diploma.