Chu Fan's attention was ultimately drawn to two techniques: the *Netherworld Soul Refining Technique* and the *Celestial Capital Black Flame Technique*.
These two were the true pinnacle of Demon Techniques.
Paired with the Ten Thousand Souls Banner, the *Netherworld Soul Refining Technique* could gather, refine, control, and devour souls. Its power was bizarre and unpredictable, potent enough to challenge those in higher realms.
Had Lingkong Yu's cultivation reached Great Success, and had she not just recently finished forging the Ten Thousand Souls Banner, the outcome of her battle with Yue Mankong might have been very different.
Yue Mankong had once said that High-Grade Ancient Treasures were rare, even among Demon Suppression Envoys.
But what made the Ten Thousand Souls Banner even more special was its potential for growth... The more numerous and powerful the souls sealed within, the more terrifying its power became.
