The Strongest Secret Skill: Undercurrent

In the center of the desolate island, Owen Su stood there with his eyes closed, holding a sword in one hand, and the invisible power of the origin of wind filled the surroundings.
Su Xin was also sensing the mysteries of the origin of wind.
With a sudden step forward, the magic sword in Owen Su's hand flew out.
There was not the slightest fluctuation, and the sword was struck silently, but it instantly activated the 70% original power of wind that he had comprehended.
It was so fast...