I Am a Policeman, Why Is My Skill a Bad Guy System?

In his previous life, Su Luo was a world-class treasure appraiser who accidentally traveled to a parallel world. I became a police station policeman, but why was the skill bound to the bad guy system? System: "Master the art of being a bad person, and if you do more bad things, you can turn them into good things!" "Hey, brother, this thing is genuine. I bought it for 120, and I'll sell it to you for 80!" Su Luo: "This fake is not worth 120 so why sell it for 80? Doesn't it seem like I'm bad? Come on, I'll teach you how to trick black people!" Official announcement: Nian Suluo captured dozens of illegal businessmen and dozens of snitches, and is now awarded first, second and third class merit! Everyone: Su Luo is the award she gets for teaching bad people to do bad things! Su Luo: "I won't pretend anymore, I am indeed much worse than the bad guys!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.