"This Sumeru formation arranged here with divine soul energy is actually so powerful."
The attack struck, and Lei Yun's expression abruptly changed. The gloom in his eyes grew even darker, and a heaven-shaking vicious aura suddenly erupted from him.
He did not know what method the young cultivator had used to touch the Universe Pipa spirit treasure just now, but he had a feeling that if he allowed the young man to continue casting his art, there was a very high chance that the Universe Pipa spirit body he had brought into the God Slaying Domain would be taken away by him.
However, the defensive power of the formation before him had also far exceeded his expectations.
The Thunder Annihilation Heavenly Art could be said to be the most powerful attack he was capable of unleashing in the God Slaying Domain.
An attack of such might landed on the formation's barrier, yet there was not the slightest sign that it was about to shatter. This caused the anger and shock in Lei Yun's heart to erupt violently.
Although the formation had not shattered, Qin Fengming had broken out in a cold sweat.
The red-haired old man's attack with the Thunder Annihilation Heavenly Art was truly formidable. When it struck the formation, the formation Qin Fengming had arranged immediately began to produce a series of cracking sounds.
If Qin Fengming had not abandoned that enormous pipa and poured out all his divine soul energy, reinforcing the formation with countless talismanic patterns and spell incantations, the formation might well have been broken by a single strike from the red-haired old man.
"A formation this enormous must consume a considerable amount of energy just to operate. Let's see how long you can hold out."
Lei Yun's face twisted into a savage expression. Although