Sneaking in

The Great Sanguine Demon Technique from the Blood Imbibing Saber was a heaven-grade martial arts manual.

However, after studying it closely, Fang Yuan discovered that it was a demon summoning technique rather than Demon Arts!

The final goal was to wake up an Essence Soul! It was the Essence Soul of the Great Sanguine Demon!

This demon had invaded the world in the ancient past, but the Celestial Thearch Sword owner had defeated him, split his body into parts, and suppressed them. However, the demon's realm was so profound that he was not annihilated despite his death. He had tempted Ou Zhizi to refine a Demonic Armament with his blood and bones and engrave the Great Sanguine Demon Technique into the armament.

Martial artists cultivating the Great Sanguine Demon Technique would unconsciously communicate with the Great Sanguine Demon's Essence Soul. They would then become his puppet or incarnation and work for his revival.