The Selected Graduates exam has nothing to do with it.

Selected Graduates exam, like the civil service exam, is a very fair and just exam, and there is almost no possibility of cheating. But you can find relationships to cheat in the interview stage. Now the interview is in the form of two-way lottery. Which examination room the examiner goes to and which examination room the candidates go to are random. Unless you are strong enough to know all the examiners, you can't cheat and you can take the exam with peace of mind.