Shen Luo sensed a rather unusual spiritual energy fluctuation emanating from the altar. The residual demonic energy scattered throughout the surrounding space was immediately drawn in by it, surging over like ferocious beasts that had caught the scent of blood and flesh.
"Whoosh, whoosh, whoosh."
In the empty first-floor space, the sound of wind gradually rose. The gathered demonic energy formed a spiraling vortex above the Magic Formation, extending into its center.
A curtain of light suddenly lit up in the seemingly empty center of the Magic Formation. Strands of demonic energy poured into the light curtain and vanished.
"Isn't this a Demon-Purifying Formation? Why does it feel more like it's sending the demonic energy back to the second underground level?" Shen Luo watched the scene, somewhat surprised.
Surprised though he was, Shen Luo did not dwell on it. The demonic energy before him was rapidly disappearing, and before long, he would be able to return safely.
That meant this seemingly dangerous mission was not all that difficult after all.
However, things did not go as he wished. Just as Shen Luo thought he would clear the trial without issue, a sudden change occurred.
The Magic Formation, which had been absorbing demonic energy at high speed, suddenly shuddered violently with light, as though it had suffered a backlash from some force underground. Its speed noticeably slowed.
Sensing that something was wrong, Shen Luo was about to step forward to stabilize the formation when the entire Magic Formation exploded with a boom.
The blast wave was not especially powerful and merely shoved Shen Luo back several yards.
Yet a crimson rune appeared on the ground within the explosion's range. Billowing demonic energy continuously emerged from the rune, beginning to fill the area again.
Shen Luo was instantly alarmed. Looking again at