Unlimited Entrance Exams, I Earn Credits by Brushing Copies

Xie Yunxing re-experienced "campus life" after his death. He never imagined that he would have to take academic qualifications after his death. Want to return to the human world? Let's take the exam first. Hell, he didn't get a doctorate even when he was alive. I feel like I have it all my life. This book belongs to the unlimited flow of novels. The dungeons inside include but are not limited to supernatural dungeons, exploration dungeons, mission dungeons, and survival dungeons. No CP.