Lin Huang activated Boundless Vision and soon, he discovered the reason that caused the ground to collapse. The surface of the flatland was thinner than the ground that they walked on during the day, it was way thinner.
Because of that, some of them who were heavier would easily cause the ground to collapse as they walked on it. The reason why Yi Yeyu had crushed the ground earlier was because she was wearing a pair of high heeled lady army boots, causing the force exerted on the ground by her heels to be stronger than people who were wearing ordinary footwear.
After seeing Yi Yeyu crushed the ground for twice, Lin Huang then suggested, "I think it'll be better for you to change to another pair of shoes. The heels of your shoes could even kill a person. It's not strange at all that you could crush the ground."
Yi Yeyu then stared at Lin Huang as she felt that Lin Huang had gloated over it.