The exam in the university is given by the teacher, and everyone who has experienced it knows that the exam result consists of two parts: the test paper and the time. It is not impossible for a careful student to be diligent before the exam and know the scope of the exam. So there is no need to envy, this kind of achievement is not as difficult as imagined. If you really learn to be a bully, then you can take part in the national postgraduate entrance examination without taking the postgraduate entrance examination. Only when the national candidates get into the top three in Tsinghua can you become a real bully and be proud of your students.