Upon hearing the Ghostly Evil Immortal King's warning, the Blood Demon Immortal King and Netherworld Immortal King were slightly stunned but quickly reacted; their expressions were extremely grave.
Even without the Ghostly Evil Immortal King's reminder, the Blood Demon Immortal King and Netherworld Immortal King already felt the oppressive sensation brought by those oil lamps.
Once those oil lamps illuminated the sky, they felt the flow of evil energy within their bodies slow considerably, and the evil energy permeating the sky was also slowly dissipating.
At this moment, the faces of the three Blood Demon Immortal Kings turned dark, their expressions intensely grave as they gazed at the oil lamps in the sky.
What exactly is this Immortal Law, how does it have such terrifying suppression over evil energy?
