Can the postgraduate entrance examination undergraduate certificate be admitted to a first-class school like Peking University?

Yes Self-taught undergraduate students can take the postgraduate entrance examination.

You can enter a good university like Peking University and Tsinghua.

That is, the first college should be reported to Peking University.

Otherwise, adjust it, that is, the score line is enough for Peking University.

There is no hope of entering. If you apply for the first choice

It is also necessary to have a second interview after passing the score line.

It's not very good anyway I hope you will succeed in the exam and be admitted to Peking University.