Minghe did not know much about the Eternal Heart. Although he cast it himself, Minghe only had a smattering of knowledge about its powerful strength and mystery. He only could study it slowly later on. But now, his most important work was to recast the Indestructible Demon Body. Without it, he could not cast a complete Eternal Demon Body.
However, it was not troublesome to recast the Indestructible Demon Body. Minghe's Origin of the Mazinger and Blood of Essence were both in the heart. As long as there was enough energy, it was not difficult to recast the Indestructible Demon Body. Therefore, Heaven and Earth Taoist bought so many Treasures of Heaven and Earth to meet Minge's demand for recasting. After all, the Indestructible Demon Body was not a common body and it required a huge amount of energy.