The Three Realms trembled, and undercurrents surged. Countless cultivators sensed the changes in the Cultivation World.
In a hidden space, a strange transformation was occurring as well. There were many hidden spaces in the Three Realms, especially secret realms undiscovered by anyone. Thus, this secret realm could only be considered a corner of the world. Yet what happened inside would certainly affect the entire Three Realms immortal cultivation world in the near future.
One location within the secret realm was filled with a blood-red lake, its bloody aura thick in the air. The lake was viscous and scarlet, exuding an intense stench of blood, as though it had been formed from gathered blood. It appeared eerie and terrifying.
Within the blood-red lake, souls emerged and struggled, letting out miserable, shrill cries. Each soul appeared to be suffering terribly.
Usually, the blood-red lake did not surge with particularly large waves. But now, its waters had become enormous, towering waves, like blood-colored mountain ranges racing across the surface. Amid the blood waves, countless Yin souls and essences howled and struggled, seemingly desperate to escape the water.
Yet none of the souls could have their way. The moment one left the bloodwater, it was immediately swept up by a mass of blood and dragged back into the viscous lake.
Deep within the lake stood a gigantic altar occupying several thousand zhang. The altar was tall and imposing, and atop it, a huge hexagram formation was operating violently. Strange, thick Spirit Patterns shot and roamed through the formation's barrier. Waves of tremendous power surged from the operating formation, churning the surrounding lake and raising massive ripples that became huge waves crashing into the distance.
Around the enormous altar, dense soul energy surged and slowly flowed into the formation atop it. At the very center