On the sea between the human and demon territories was a cluster of islands, among which was a giant island with a radius of thousands of kilometers. 

Thousands of low-grade cultivators were busy at work on this island, constructing a series of buildings around the tallest mountain on the island.

At the same time, a series of formation treasures were being set up all over the island, sending restriction fluctuations surging through the air in all directions.

In the belly of the tallest mountain, Han Li was currently placing a round black and white stone that was roughly the size of a human head into a giant formation that covered several acres in area.

In the instant the stone was set down, the entire formation instantly emitted a loud buzzing sound while releasing countless golden and silver runes.

Black and white light flashed from the stone, and a burst of peculiar energy fluctuations erupted forth before fading away.

"Can this formation really make use of the...