Nine Heavens and Ten Earths, the Great Era of Contention!

The Heavenly Origin Spirit Vein was formed when Heaven and Earth Vital Energy became highly condensed and gathered together for special reasons.

Heaven and Earth Vital Energy was gaseous energy from a higher dimension, superior to Heaven and Earth Spiritual Energy. Thus, wherever vital energy existed, the spiritual energy would be of a higher grade and far more abundant.

In the Nine Heavens and Ten Earths, even the highest-grade spirit veins were only eighth tier.

In a sense, the Heavenly Origin Spirit Vein was a Ninth Tier Spirit Vein. It could directly connect to the Primordial Void Realm, allowing a ceaseless stream of Heaven and Earth Vital Energy to descend and nourish the spirit vein.

At this moment, the two Tribulation Crossing Immortal Venerables joined forces. Their Immortal Venerable magic power, surpassing Mahayana Peak, transformed into surging rivers that tore open the heavens and slammed directly into the Heavenly Origin Spirit Vein.

In an instant, Heaven and Earth Vital Energy erupted, causing the Heaven and Earth Spiritual Energy across the entire Azure Profound Heaven Domain, over tens of millions of miles of land, to boil as one. Every spirit vein spewed spiritual energy.

Ancient Dragon Immortal Venerable and Cangxuan Immortal Venerable spoke with the authority of Heaven itself, forming hand seals as they declared, "Open!"

With a thunderous boom, the Azure Profound Heaven Domain seemed to ripple. Wherever that wave of energy passed, the real world and the Primordial Void Realm briefly formed a direct connection.

Void Refining Cultivators wore looks of delight.

"Such dense Heaven and Earth Vital Energy."

"The speed at which Nascent Soul Power transports Heaven and Earth Vital Energy has increased by at least threefold. If one could cultivate in this state for three thousand years, it would be almost equivalent to ten thousand years of