"Brother An, look over there!" Yang Chuxia pointed at the side of the cliff wall, "I remember the day when your knife pierced through, didn't it?"
"That's right!" Ye Zi'an also noticed something amiss, "There should be a mark there." But at this moment, the place was smooth, without any knife marks.
"Sir, do you think there is a formation here?" Ye Yi came over and said, "Some ancient books have mentioned that if there is a formation nearby, things around can change anytime, and day and night inside the formation are different, too."
Upon hearing about the formation, Yang Chuxia felt familiar; she had read ancient books and seen introductions about formations, but she had never encountered one.
