When ordinary trace examiners handle cold case fingerprints and produce results, they must submit them to fingerprint experts for review.
Some provinces and cities have dedicated organizations like "Fingerprint Expert Committee" for fingerprint review. However, most consider using expert manpower a waste and adopt a model where a designated person collects fingerprints, then assigns them to experts for matching, and finally consolidates their opinions, as in Shannan Province.
However, during a fingerprint battle, there's no need for such formalities. Everyone present is an expert, and skipping them to consult other experts would not only be troublesome but might raise doubts among them—whether actively participating in a campaign organized by the provincial department might cast doubt on one's expert status.
It also aims to increase everyone's job enjoyment and help them learn from each other. During the fingerprint battle, the experts present review each other's work.