If You Are Not Qualified, What Can You Do to Time Travel?

Li Cheng thought that time travel was an accident, but when he woke up he was told: This is the registration site for new students of "Time Travel Academy"! Others are experienced players who hold points, exchange identities, and choose worlds, but he is a "black man" who can't even leave the novice village. Want to cross legally? Let's take the "Time Travel Qualification Certificate" first!