When the group entered the second layer, they could sense that the devilish energy here was a couple times denser than that of the first layer.

"Everyone, take care of yourselves. The real fight begins now," reminded Yu Caidie.

Sure enough, they hadn’t traveled far when a few Devil Kings shot out from the ground. These Devil Kings were devil flame rats. With devilish flame wrapped around their bodies, they attacked the group of humans with an extremely powerful offensive capability.

Some in the group cultivated the power of flame, and they started quickly killing the devil flame rats and harvesting their devil cores. The devil cores were for the devilish beasts what the demonic cores were for the demonic beasts. However, the...