Cobo is an independent enrollment of schools and tutors. Fairness and unfairness are decided when contacting the tutor. If you choose a mentor, you will be selected. The exam is not important, but it is a prerequisite for getting started. It is the college entrance examination that decides whether to win or lose according to the results. Cobo should be a better test of your own direction.

It is difficult for a doctor to change his research direction unless the tutor is not good at it. The test is the ability to understand, analyze and comprehensively apply, so if it is your research field, you don't need to prepare for it for a long time.