C813 Such a Terrifying Cultivation Speed

Since the young man was strong, Xu Fann was not able to avoid the sudden insight he saw in his eyes.

So, he knew that Xu Fann understood, so he continued: "If you want to fix this kind of flaw, it's very simple, it is to enter the center of the Sublimation Treasure Sword's Tetragonal Lightning Pool, and guide the purest power of lightning there. After refining the treasured sword