The terrain of the Primordial Great Land could be altered through the Earth Flowing Water Diagram.
This was no small matter.
Changing the terrain of a mountain or valley, a river or stream, was not particularly difficult for mid- to high-level immortal gods.
But changing the terrain of the Primordial Wilderness on a large scale and at will was far from easy.
Once the area involved an entire region, even a Quasi-Sage would find it difficult.
Just look at Luo Qing's previous plan to develop the Primordial Wilderness's Water Vein network.
He had brought in Jade Void Mountain and Western Spirit Mountain, combined the reputations of six Sages, and involved their many disciples.
To change the terrain of an entire region and even the whole Primordial Wilderness, they had ultimately needed the disciples to fight a battle before they could succeed.
Without the support of Sages behind them, even if more than a dozen Quasi-Sages conspired together,
they still could not have completed the entire Water Vein development plan.
Given the current size of the Primordial World, even if a Sage personally altered the Primordial Great Land,
they would still have to face a great many troubles.
The Earth Flowing Water Diagram, however, could subtly and imperceptibly alter the terrain of the entire Primordial Great Land.
Its wondrous power was already enough to rival an Ultimate Treasure.
Even Nuwa's Top-grade Innate Spiritual Treasure, the Mountain and River Diagram, could never accomplish this.
The Water Veins, Earth Qi, Spiritual Roots of the land, and more were all under the control of the Earth Flowing Water Diagram.
It would be no exaggeration to say that mastering the Earth Flowing Water Diagram was equivalent to mastering the Primordial Great Land.
Moreover, besides the land and Water Veins,
even the Fire Source Ancestral Vein