The power of the sword aura is truly extraordinary. Previously, when Ye Qing only managed to clear the meridians in his arms, he attempted to strike a sword aura using the Seven-Star Ancient Sword. At that time, casting a single sword aura nearly exhausted all his inner strength, which shows how much inner strength this sword aura requires.
Therefore, Ye Qing always thought it primarily related to inner strength. Once the meridians were cleared, he could utilize his entire inner strength, allowing him to unleash the sword aura.
