Crimson Overlord - Chapter 62

... he gang’s situation, Orpheus was slightly surprised. Katherina’s management of the Black Snake gang was excellent. She managed to control each part of the gang perfectly and kept detailed records about the gang’s earnings, costs, losses, the relationship between the members, the relationship with other gangs, and the relationship with other powers.

She even told him who were spies and whose force they belonged and how she arranged the different members according to their specialties.