Kai Syaoran killed the gang members until the brothel went silent. Everyone inside was either dead or knocked out. It had taken Kai Syaoran over three hours to kill all these people and this was only because he had allowed many of them to finish their business before killing them.
When he was done, he had taken away all their valuables for himself. He did not leave behind even a single corpse.
He left the brothel and returned to the inn where he had gotten a room for himself.