Immortal Emperors Return?

Zhang Shuai began cultivating the Heavenly Demon Body Tempering Art.

Zhang Shuai had already gathered all the required spiritual materials: a Shaking Mountain Ape's spine, Undying Nether Toad essence blood, Azure Water Dark Tortoise Shell...

Following the cultivation method of the Heavenly Demon Body Tempering Art, he first needed to purify and refine these spiritual materials. Zhang Shuai directly brought out the Heaven and Earth Creation Cauldron and carefully placed the materials into it one by one, refining each of these incomparably tough materials separately. The spine was burned into bone powder that glimmered with golden light, the essence blood was purified into dark-red blood pearls containing an undying will, and the tortoise shell was melted into deep-blue liquid essence...

Once all the spiritual materials had been processed, Zhang Shuai took out the Heavenly Unity True Water he had kept in reserve and poured it into a jade pool prepared long ago.

The Heavenly Unity True Water was the essence of all waters—supremely yin and gentle, and especially suited for containing and guiding medicinal power. He evenly scattered the refined powders and liquids from the six spiritual materials into the pool.

"Gurgle, gurgle..."

The once clear and tranquil Heavenly Unity True Water instantly began to boil, its color turning dazzlingly multicolored. Misty radiant light rose from it as powerful demonic energy and energies of vastly different attributes clashed and merged fiercely within the pool, emanating an alarming aura.

Zhang Shuai removed his clothes, drew a deep breath, and resolutely stepped into the pool.

The instant he entered the water, unimaginable agony surged in from all directions like a tide, instantly drowning him!

This was not a single kind of pain, but one that deepened layer by layer, seeping from the outside in through every inch of skin, every bone, and