In the deep and dark underground cave, after working hard for a day and eating something casually, almost all the human captives fell asleep in hunger and fatigue.
They were sleeping in those dim mountain caves of the underground space. Some of the caves were pitch dark. According to the miserable practices and lessons of human captives, In the dark environment, people had the best sleeping effect and recovery of the body energy at the fastest speed. Those who liked to sleep in bright places could not survive long in such an environment. They had long become bones. Even their bones could not be found.
Because of this, all the human captives would choose to rest in quieter and more hidden places.
Additionally, Zhang Tie found that those human captives who opposed to eat human fleshes didn't sleep together with those who had eaten human fleshes. They were sleeping in different caves. In this way, they might feel a bit safer.
