However.
When demons reached a higher level, there would be fewer experience points that killed low-level enforcers.
Although they could let enforcers go after they kill the fiend, and then let enforcers upgrade and then killed them.
But,
Once an enforcer was released.
The entrance to the demon space would be farther and farther away.
Once he was randomly teleported far away, he would lose control of the enforcer and be unable to continue to grow.
Therefore, it was impossible for them to let go of the enforcers in demon space.
When the enforcers were not strong enough, they could only go to other places to look for him!
The New Jersey demon must have come to New York to look for enforcers above level five.
"These demons are all about level 9."
"But there is no demon above level 10."