The holy kings of the underworld possessed their own unique forms of communication. The underworld was too vast and the few holy kings situated in different locales. They usually relied on these kinds of communication formations to talk to each other.

Of course, these formations only worked in the underworld. They were ineffective once the user left.

“Eh? Lu Yun? Aren’t you overseeing things from your Dao Academy? What are you doing here?” Holy King Desolation blinked when he saw the communication formation suddenly light up next to him.

It was top secret that Lu Yun was in the chaos. Apart from those of the nine sacred lands—nine sects picking up...