The Unnatural Management Bureau was certainly much more lenient than the Demon Domain, and not as cruel. A small mistake there wouldn't cost you your life.
Once they were handed over to the Unnatural Management Bureau by Bai Chuwei, there was only one outcome—
Their cultivation base would be destroyed!
They would lose the ability to cultivate for the rest of their lives. To put it simply, their Spirit Root was crippled, and their path as cultivators was over.
They had been cultivating since they were children, so how was this any different from killing them?
Of course, if one had no great ambitions, it seemed nice enough to live on as an ordinary person, but the key point was...
They were Demonic Cultivators!
And they had even joined the Demon Domain as Demonic Cultivators!
