The tornado began to tremble violently as if the entire competition platform was shaking. The ancient referee on the side was watching all the movements of the tornado intently, because Willow was in the eye of the wind. The powerful collision between the boulder and the tornado was too huge. The tornado at this time was almost out of Willow’s control. With such a huge energy, Willow might lose it in the eyes of the wind if he was not careful. So at this time, the ancient referee had to be prepared at all times, and immediately step forward to interrupt once a danger occurred. The tremor of the tornado became more and more intense, and the air flow around it had begun to be disordered. Finally, when the violent tremor reached the limit point, there was a loud noise.