C1756 Even if he died he would not be afraid!

Lin Tian looked at his surroundings, then introduced the little black ball, "This is called Echo immortal formation, any sound will be magnified several times in here, and it will even echo."

"How many times larger? It's still echoing? " The little black ball was startled, but Lin Tian laughed and said, "So, it's best if you stop shouting, otherwise