Just as one wave flattened, another roared. Jie had just escaped one disaster when a giant iron ball rolled towards him, frightening him to the point of going pale. Stumbling backward, he inwardly cursed his luck.
The whole room was shaking, making it impossible to stand still, let alone dodge in time. Jie was driven back against the wall and escape routes were running out. Seeing the massive iron ball about to roll over him, he quickly dropped to the ground and tightly closed his eyes.
But then, an unexpected thing occurred. After crashing into the wall, the iron ball rolled to the other side while Jie, lying on the ground, was completely unhurt. He couldn't believe that he had just survived.
Su Hui witnessed this incident. After touching the wall and taking a quick observation, she realized the trick; the wall wasn't straight but inclined. So when the iron ball hit the wall, it left a gap at the bottom, providing enough space for a person to hide.