QQ Schoolmate: The Chicken Rib of Real Name System

I just received an invitation from a classmate on QQ Alumni whose real name is Sun Bo to join the internal test of a group we are both in. So I happily went to register. After filling out the relevant information, I clicked confirm to apply to join, but the system immediately prompted an error: "The real name you entered is incorrect." I went back to check it - name: Qiu Jianbo. What's wrong with it? I re-entered these three characters again, but it still showed an error. This time, the error message had a few more words: "If the real name you entered is indeed your real name, please click here to appeal." So I clicked and went in.