In some areas, the group number is drawn first, and then the sequence number is drawn. In some areas, the group and order are determined at one time, such as three (1), which means the third group's 1 admission. In some areas, candidates are grouped in advance and the examination room number is arranged. This practice is no longer used in most areas, because fairness cannot be guaranteed and it is easy for examiners and candidates to collude in advance.