"At least eight years, right?" Yang Fei asked.
Sun Xingyu nodded, "There shouldn't be too much deviation, it might even be longer."
Tong Yunshu said, "The overall strength of this barrier wall is still very high. With our current strength, we can't think of breaking it. If it weren't for the sheer number of demonic beasts sealed here and the possible decline and weakening of the energy supporting this barrier array, this barrier could have lasted even longer."
Sun Xingyu glanced at Tong Yunshu in surprise and nodded silently.
