Wind Crystal Stone!

Liu Yan used the S-grade skill, Omniscient Insight, to search the surroundings to see if he could find anything else.

After a period of searching, Liu Yan's eyes suddenly lit up.

Liu Yan could sense that there was a powerful wind elemental energy gathering in the surrounding area.

This wind elemental energy was not only more concentrated and powerful than the wind elemental energy in the air.

Moreover, this wind elemental energy was calm, unlike the other violent wind elemental energy in the air.

Liu Yan quickly walked towards the closest spot and saw a unique stone.

This stone looked like an ordinary stone from the outside.

The only difference it had from ordinary stones was its color. It was green.

It was clear that it was due to the condensation of wind elemental power that it had this green color.

After getting close, Liu Yan could sense the concentrated wind elemental energy without using his Omniscient Insight.