C455 The Power of the Challenge of a Martial King

"This incantation can help you quickly recover from your injuries."

After Xiao Mu sent a small incomplete portion of the Azure Emperor's Longevity Formula's incantation to Wang Lie, it caused a shockingly huge wave to surge in his heart. Even though it was incomplete, what kind of heaven-defying offensive technique was this [Green Emperor's Longevity Spell]?

Even if it was just a small section