C27 Nine Transformations of Demons and Gods

But of the thousands of cultivation techniques, the body tempering cultivation technique was the most difficult and the most painful. No one would dare to try without superhuman perseverance.

However, Xu Haotian was different. He had already died once. With his strong mental strength and tenacious willpower, how could he be afraid of pain?

At this moment, on Xu Haotian's calm face