Heaven-Refining Furnace Formation!

Buzz!

Those ancient array patterns were as thick as a child's arm, crisscrossing and linking together. In moments, they formed a gigantic circular array diagram dozens of zhang across. Runes flowed within the diagram, firelight flickering in and out of sight, while a suffocatingly terrifying heat rose from the array patterns!

"This is..."

Terrifying formation fluctuations spread outward along with searing heat. The gray-robed elder's pupils contracted sharply, and even his voice warped with fear.

"A seventh-grade high-level spirit array?! No... these fluctuations are already close to the eighth grade!" The burly elder blanched in horror, his legs turning weak of their own accord.

A seventh-grade high-level spirit array possessed enough power to kill a Ninth-Rank Martial Venerable!

Though the two of them were Eighth-Rank Martial Venerables, facing a seventh-grade high-level spirit array left them with nothing but a dead end!

Boom!

In the blink of an eye, the array diagram fully took shape. A crimson pillar of light shot skyward from its center, then exploded thunderously in midair, transforming into a massive furnace that descended upside down.

The furnace stood a hundred zhang tall, crimson all over like blood. Countless ancient flame runes were engraved across its body, every one of them burning and radiating a terrifying heat capable of incinerating the heavens and boiling the seas! It had three legs and two handles, its opening facing downward as it completely enveloped Gu Qing and the other two.

This array was a seventh-grade high-level spirit array—the Heaven-Refining Furnace Formation!

"Break the formation, quickly!"

Gu Qing shrieked, her Scarlet Flame Python Whip lashing frantically against the furnace's inner wall. The whip shadows turned into fire pythons filling the sky as they bombarded the furnace wall.

At her side, the two elders also fought desperately. The Ghost-Head Saber slashed out pitch-black