Because otherwise, he wouldn't have any fun. He can't exactly pass the time with his own subordinates, can he?
Of course, he never had the intention of killing all these ghost kings. Aren't we supposed to be merciful? Ah Gui had to stop his actions, then turned his gaze to the ten ghost kings who were now expressing their submission. Those ghost kings met his gaze, immediately lowered their heads, and dropped to one knee.
For a ghost king, this was the highest form of respect. These people were truly submitting at this moment.
Ah Gui suddenly felt that gaining a bunch of followers wasn't too bad either. At least in the future, having such a group pave the way would instantly make him appear high-end and classy. Ah Gui thought it was definitely an excellent, constructive choice—the person who came up with this idea was truly a genius. Ah Gui felt he must recruit him as his top follower.
