Nine Nether Demonic Abyss, underground world.
High in the sky, chaos reigned. Countless streams of profound power, vital energy, Martial Souls, and Corpse Qi churned without end.
Su Mo stood calmly, watching these gathered resources. After a brief moment of thought, he flipped his palm and took out the Billion Demonic Sword.
"Heh heh heh!!!"
The moment the Billion Demonic Sword appeared, the demonic spirit's sinister laughter rang in Su Mo's mind.
"Demonic spirit, all this vital energy is yours!" Su Mo shouted coldly. Then, with a toss of his arm, he hurled the demonic sword into the boundless sea of vital energy.
In an instant, demonic light burst from the sword as it began absorbing the endless vital energy.
Su Mo also sat cross-legged in the air and began absorbing the profound power and Martial Souls.
With so much profound power and so many Martial Souls, he naturally would not allow them to go to waste.
As the profound power entered his body, Su Mo immediately refined it with all his strength. Great numbers of Martial Souls of every kind were also continuously devoured by him.
Time slowly passed. After roughly half an hour, everything returned to calm.
All the profound power, Martial Souls, and vital energy had vanished completely.
Su Mo's cultivation rose from the early stage of the fourth level of the Martial Emperor Realm to the middle stage. He was still far from the peak of the fourth level of the Martial Emperor Realm.
The Yellow Springs Demonic Sect disciples had been too weak. Their profound power was mixed and thin, utterly unfit for any great use.
However, even the Martial Souls of hundreds of thousands of Yellow Springs Demonic Sect disciples had failed to advance Su Mo's Martial Soul.
Now, the number of Martial Souls