The Irreversibility of History

When Gu Ding stepped out of the room, he realized that the room they had been in was merely a tent, and everyone else lived in tents of different sizes.

Gu Ding was a little curious as to why the old man wanted him to refine purification medicine. Nevertheless, his question was soon answered when he saw everyone of the Witch Tribe in a strange state. Each one of them looked like they were in pain.