Actually, Wu Yu had never seen how demon immortals fought.

And now, he understood that the disparity between demon immortals and demons was the same as between immortals and mortals.

The leap was far greater than the metamorphosis between the Primordial Spirit Transformation Realm and the Dao Querying Realm.

Moreover, this was an unprecedented evolution, from a finite lifespan to an infinite one. From querying dao, to mastering dao.

Strictly speaking, it was not even the same life.

Immortals, demon immortals, and ghostly immortals all saw it as the ultimate goal of life.

At that level, even demon immortals would not just fight with their Natural Mystiques. Even their mystiques were executed with such profound mastery that mortals would not be able to understand.

"Perhaps they are using something in this world that we cannot even sense. That's why their level is so high. Complex and profound."

Amongst mortals, Wu Yu was already fairly powerful.

Using the metaphor of a life form, like,...