Thinking of this, Ning Cheng was even more shocked. He knew very well how hard the inner realm of chaos was and how strong the rules were. If it hadn't been for the invitation of the Immortal Ax of Creation, or even the cooperation of many powerful people, the Chaos Inner Realm would not have been able to be opened at all. And the Holy Master of Five Elements can break through the endless void and enter the inner realm of chaos with just one wooden nail. How powerful does this have to be?...