Boom!
The Thunder World formed by Thunder Ancestor's formation was far more powerful and solid than his own Thunder Domain.
For the moment, it withstood the gray pillar of light's attack.
The gray pillar of light struck the Thunder World, churning ceaselessly, but the gray mist clinging to it gradually thinned, as though dissipating.
"To force him to use this formation-this junior really is remarkable." Yanfeng Ancestor was familiar with Thunder Ancestor, and naturally knew.
There were two sets of this Thunder World Ten Absolute Formation.
He carried one set with him, while the other remained in the Source World as a backup.
This was his backup set.
Thunder Ancestor had commissioned a Half-Hunyuan Dao Comprehender to refine this formation.
That individual ranked among the peak experts even in the Dark Sacred Realm.
He looked toward Dongguan again.
Although he felt it was something of a pity that this junior had already fused with a Hunyuan Bloodline, what he had fused with seemed to be the bloodline of a World-Level Hunyuan Creature.
"But he hasn't even reached the Ultimate Realm yet. Where exactly did he obtain this World-Level Hunyuan Creature bloodline? Could it be Infinity Space?"
Yanfeng Ancestor was somewhat puzzled.
Dongguan's World-Level Hunyuan Creature bloodline differed from anything in any treasure land on the Origin Continent, such as the Heaven Pillar Realm or Dream Domain. That left only Infinity Space, with its infinite possibilities.
However, a World-Level Hunyuan Creature bloodline was expensive, and exchanging for one in Infinity Space was far too wasteful of Reward Points.
He shook his head. Though puzzled, this was the other party's secret, and there was no need to probe too deeply.
Then he saw what the gray pillar of light looked like after its gray color gradually faded, and his expression instantly grew