The purpose of this ceremony is to randomly assign the order of candidates, so as to prevent some people from taking the dominant position because of overconfidence or adequate preparation, and at the same time help to ensure the fairness of the exam. In the re-examination lottery, candidates need to draw a number or code to represent their number or order in the exam, and then take the exam according to the lottery results.
For example, in the postgraduate re-examination, candidates may need to choose specific interview topics, time, interviewers and so on. According to the number of lots. The lottery results usually need to be announced after the exam for candidates' reference.