I'm a graduate student, so I don't have any qualifications. Just follow the class. Don't fail the scientific examination, but it's no use studying for a double degree in Dalian University. Because of the time, many classes overlap, so it is impossible to follow the class completely, so you can only take the exam by yourself. Moreover, the society does not recognize this, because even if you have a dual-degree authority, it is useless to take the exam. No one agrees and delays your major, but you can take other majors.