A month later, Lu Changsheng opened his eyes. He had comprehended the fire-attribute Heavenly Demon Essence Blood. He pulled up his Status Panel to check his status. 

[Status Panel]

Host: Lu Changsheng

Perception: 8650 (Praised by All)

[Skills]

Fire Principle Seed: Progress 11%

Heart Sword True Mantra: Progress 1% (Golden Heart Sword)

Oh, the Fire Principle has reached eleven percent. That's an instant growth of six percent, one percent more than last time. That's great!

Lu Changsheng was overjoyed with this result. 

The previous drop of Heavenly Demon Essence Blood had raised his progress by only five percent, while this one had given him six percent. Still, he knew this did not mean every drop would be better than the last. 

The exact improvement depended on the quality of the essence blood. A drop of essence blood from a heavenly demon with powerful innate abilities would naturally bring...