Circle culture exists in any industry.
For example, in Lu Chuan's field of crime scene investigation as a detective, everyone operates within the same circle, with comparatively less interaction with the outside world, creating a relatively closed environment.
Throughout the province, the number of top-notch crime scene investigators is actually limited. Some excel in fingerprint identification and analysis, others in footprint analysis, and some in bloodstain pattern analysis.
Of course, there are also those like Lu Chuan, who are proficient in all these areas.
Lu Chuan has participated in the municipal bureau's fingerprint campaigns, as well as the provincial department's fingerprint campaigns. After these large-scale campaigns, he has become acquainted with most of the capable crime scene investigators across the province.
In a short period, changes are not significant, but this "short period" can actually be as long as 10 or even 20 years.
