"What, how is this possible!" The power of the Netherworld Fire lies in its corrosion and freezing abilities. When both parties have similar soul power, it gives him an absolute advantage. His cultivation level was not much different from Xuntu's, even if he was slightly stronger, it was by a mere margin. So, usually, these two were always at odds, enemies to each other.
But after he obtained the Netherworld Fire, he immediately took action. If it weren't for Xuntu's incredibly good luck, Xuntu would have likely died at his hands already. While Xuntu hid in his territory and did not show up, he relied on the Netherworld Fire to run rampant, even directly breaking into the Ghost Beast Plains to hunt ghost beasts.
This time, after he hunted ghost beasts again and came out of the Ghost Beast Plains, he happened to find Xuntu, and appeared fearlessly. He was already determined; this time, he must kill Xuntu.