Chapter 139: Demon Blade!

Xiao Chen spent a full day and night in the underground chamber before he completely refined the formation disk.

The Nine Mysteries Formation disk could be considered a magical artifact; once refined, he could carry it with him and lay out the Nine Mysteries Formation for cultivation at any time.

However, just having the formation disk was not enough, as a formation required energy to operate.

For example, Spirit Stones or Immortal Stones.

Unfortunately, in an environment like Earth where Spiritual Energy is so thin, where could one find Spirit Stones?

The only thing Xiao Chen currently had that could power the Nine Mysteries Formation was the bead formed from the accumulation of Immortal Spiritual Energy.

"Almost done!"

Xiao Chen stood up, ready to leave.

This trip to the Yu Xiao Sect was initially just to take a look, but he had gained quite a bit unexpectedly.

But just then, he suddenly sensed a disturbance at the peak of North Spirit Mountain.

"Go up and take a look!"