Su Yu and Duan Yuan froze when they felt the presence of the yin energy. Well, it has to be said that the surroundings are filled with yin energy already as this is a haunted place, and a very famous one at that as it was stained with blood because many has died here. But this kind of yin energy that they sense right now… it is different.
This yin energy is more sinister than they expected, and so would make people feel colder. But Tang Lele, the only ordinary human present (as Su Yu and Duan Yuan have immortal souls) didn't look or feel cold because Duan Yuan has already casted a spell on him, and also has a talisman for his additional protection. Thus, he might feel a little cold, but not that much since Duan Yuan's power on the talisman and the spell gives him warmth.
