Beyond the Thirty-Three Heavens, at the Daluo Golden Palace.
"Good disciple, look at this."
The white-robed Heavenly Emperor summoned his closed-door disciple and pointed at the desk with a smile.
A purple jade slip glimmering faintly with light lay upright and silent, ancient beyond words.
At his master's behest, Mu Chen picked up the jade slip and pressed it to his brow. Before long, torrents of ancient information surged into the depths of his mind, taking up a vast expanse.
"The Supreme Heart Demon Scripture?"
After absorbing all the information, Mu Chen looked up in surprise.
The Supreme Heart Demon Scripture was a supreme cultivation method created by the Heart Demon Thunder Emperor, one of the Nine Ancient Emperors and a Saint Grade Heavenly Sovereign.
Once a living being cultivated it, they entered a supreme, emotionless and desireless Heavenly Demon State.
It gave perfect control over the Spirit Soul, spiritual energy, and physical body, bringing mastery over the body's full strength to the theoretical limit. Their power would surge, they would feel no pain, and they would become a fighting machine.
Simply put, it was a power-up ability akin to the Heavenly Demon Disintegration Technique, but without the latter's severe side effects of leaving its user dead or crippled.
Cultivating this art required the aid of an exceptionally rare ancient divine lightning: Nether Heart Demon Lightning. One had to condense a Divine Ability Seed in the heart, a perilous process where every step could mean life or death.
There were three stages: Lesser Heart Demon, Great Heart Demon, and Perfect Heart Demon State.
The Heart Demon Thunder Emperor, master of the Ancient Thunder Palace, had fallen in battle during the ancient catastrophe. The colossal Thunder Palace he had founded had collapsed with him.
It was said that one of the