Having a record has no effect on the postgraduate entrance examination. The initial test does not affect, but some schools will refer to the information of undergraduate students in the interview process of the second-round exam.

As long as the punishment is not in the file, there will be no problem, because the school that admitted you will not send a letter to your undergraduate school. They only look at whether your file has been punished, and then look at the political review form. However, the political review form was written by the teacher in my school, all for the better. If your punishment is in the file, even if it is withdrawn, it will still be recorded in the file, which is still risky for your postgraduate entrance examination.

It should affect the political review and admission. If the punishment is not filed, then the impact is relatively small.