Countless Reincarnations

In the past, people with the highest moral standards in the human world poured their entire life's mana into the barrier, just to isolate the three realms and prevent gods, demons and demons from causing trouble in the human world, while they themselves cycled through life, old age, illness and death as mortal bodies. Time has passed, and today's monks are vague about his story, and even point fingers at his deeds. I told you to study history carefully, but you didn't listen. You don't remember your grandpa's grace and power at all. It doesn't matter, the cultivation system created by this hand should be reorganized. But... How to absorb the spiritual energy? Remembered!