The reason why ZhangZetian didn't get the Tsinghua diploma was that he might be a part-time job. In my sophomore year, I failed all four courses, so I can't fail any more, so I chose to go to the United States for exchange, knowing that I failed because Tsinghua's grades would be publicized, so I could only get a diploma from Peking University. If I got a degree certificate, we knew that I had to complete the credits stipulated by the school. Therefore, on the one hand, ZhangZetian has too many other things to do, and has to face family responsibilities and some career distractions. Therefore, even if ZhangZetian is talented, he doesn't have much energy to complete all the subjects of Tsinghua University's major, which is very difficult. In addition, we also know that Tsinghua University's degree certificate is not easy to get, and ZhangZetian may still be studying part-time, because he usually doesn't have much time to study, so he can only rely on Saturday and Sunday.