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The cell was dark and damp, and because this area was rarely reached by the artificial sun, the temperature inside the prison often dropped below zero. In such conditions, the Sky Ring prison guards had a special method of disciplining the prisoners.
Each cell was equipped with a bed, but every night before sleep, the guards would remove the blankets and sheets, leaving behind only the cold, hard bed board. They would then order you to endure the night as the chill spread from the ground, seeping through the bed's porous and loosely fitted slats to grasp at the inmates. You would huddle your shoulders, shivering uncontrollably, as the cold slowly extinguished your reason. Just when you were about to lose it, the guard would shout at you, "Hey, get up, time to work."