The operational policy of Chamhwa Dungeon is strict neglect.
It means that nothing is required of the prisoners.

This is far harsher than forced labor.
When confined with the same people for ten, twenty, or thirty years without stepping outside even once, they lose the ability to even have a conversation.
To start a dialogue, there should be something new to discuss.
They wake up, eat, and sleep.
They waste away the long years without any stimulation whatsoever.

They haven’t even been castrated.
They could have spent their time engaging in the lewd stories …