The Yin Yang Valley was the core of the Yin Yang World. It was a place where Yin and Yang converged, a mystical space where life and death merged.

The Yin Yang World was actually two worlds, one Yin World and one Yang World. The Yang world was the side of life, and it was the world they were currently exploring.

As for the Yin world, it was a world of death. Death energy filled that place. Any life that entered would be destroyed.

There were legends that some terrifying existences resided within the Yin world. But legends were just legends. There was no concrete proof.

The energy of the Yin world and the Yang world was in a constant cycle. Every now and then, there would be a Yin Yang tide.

When the life energy and death energy merged, when the stars aligned, the Dao of Life and Death would be displayed for all to see. That was greatly beneficial to anyone wanting to comprehend life and death in an attempt to advance to the Netherpassage realm in the future. It would lay a certain foundation for that moment, greatly improving their odds of advancing.

So the Yin Yang Valley was the greatest...