The Forced Demon Lord

Ten thousand years before, in the Battle of the Holy Land, Luo zu lost his flesh and soul, trapped in the ring of the demon lord. The demon lord, he explains, can build an altar of sacrifice to augment his power. The previous demon lord used this power to conquer dozens of cities. Luo says that he's willing to help him resurrect his body as long as he can avenge his grandfather. He wants to know how he can do this. He says that if he bites his finger, the blood will flow into his ring. It's indescribable, he says, and it's like there's a power in his body that's the power of dominance. He's so happy that he doesn't want to lie to him anymore.