Killing Two Innate Sages Consecutively

The people could not imagine how Lu Xuan could possess such powerful strength.

"This doesn't seem to be a forbidden technique!" An Immortal King decided. Such combat strength had clearly exceeded the power of a forbidden technique. 

When one used a forbidden technique, its power would exceed one's control. Often, one would be unable to control all of its power, resulting in the release of Mana and many strange phenomena.

For the innate sages, although their control was very good, there would still be signs of this kind. After all, this wasn't a type of energy that they could control.

However, Lu Xuan didn't show any signs of this kind. He controlled his energy perfectly. This wasn't a forbidden technique at all; it was Lu Xuan's own combat prowess.

After coming to such a conclusion, this Immortal King was terrified, as he thought of something scary.