Seeing this, Butcher and the others also stepped into the Boundary Sea. They had all mastered the Two Principles Heavenly Art, so refining these Dark Immortal Kings posed no problem. It was through this method, combined with the Original True Understanding, that they had reached the rank of Quasi-Immortal Emperor.
"What can we do now? The strongest old monster in the Dark Heavenly Court hasn't even made his move yet. We've only just entered this realm, and we still can't take them down."
Butcher said this to Shi Hao. They, too, had felt how terribly difficult every step forward was as a Quasi-Immortal Emperor.
Shi Hao thought for a moment. "Keep killing Dark Immortal Kings and refining them for our own use. Advancing even one stage is difficult for us now. I feel the problem lies with this world. Xiaoxiao once told me that our world was like a prison cage. Only by breaking out of it could we go further."
Butcher sighed. "I wonder how the young master is doing now. Has he managed to establish himself in that greater world?"
Shi Hao said, "He'll certainly be fine. Catching up to him will be difficult for us. The enemies he faces are stronger than ours-Immortal Emperors are only the starting point. That's still far beyond us. Let's deal with the difficulties before us first."
They kept hunting down Dark Immortal Kings in the Boundary Sea, killing them and refining them into their own source power. The three old monsters, Hong Emperor, Yu Emperor, and Cang Emperor, had exhausted much of their vitality in their earlier battle with Shi Hao and the others, and had been forced to return to the Dark Heavenly Court to recover.
More than three hundred thousand years passed like this. Shi Hao slaughtered vast numbers