Ling Han had already witnessed it previously. When Rong Huan Xuan lost his arm, Asura Demon Emperor still managed to force it to grow back. This recovery ability was really quite incredible. Upon seeing it a second time, he could feel nothing but astonishment.
This recovery ability was already good enough to compare to the Indestructible True Fluid, but his maximum now was only three drops of the Indestructible True Fluid.
But on a second thought, what cultivation level was Asura Demon Emperor at? The God Tier! Though despite being an ultimate warrior of the God Tier, he was trapped in the body of a martial artist in the Gushing Spring Tier and thus unable to display his abilties to the fullest. Nevertheless, he should still have some special skills. Otherwise, he would not have been suppressed all those years ago, but instead killed off a few hundred times.