A crime committed by someone with antisocial personality disorder might be to vent some kind of emotion.
But when they form an organization and commit multiple crimes, it must be for a certain purpose.
Murder?
The number of psychopathic killers isn't high, but it's certainly not low either. If it were merely for personal pleasure, they wouldn't need to form an organization, tying their hands and feet.
Therefore, Bai Yanliang is sure that the criminal organization called Dark Abyss is conspiring something, or to put it more bluntly, they gain something from each gruesomely cruel, bizarre crime.
First, it can be ruled out that it's not for money, and secondly, they don't seem to care about fame either.
So what is the purpose of their repeated cruel and perverse murders?
Bai Yanliang believes they are not merely acting themselves but also encouraging others to act.