To eliminate these treemen, he would need to expend a lot of immortal essence.

The number of these treemen was greater than the first earthly calamity's snow monsters, and they had strong regenerative abilities. Fang Yuan could see many severed twigs that were stabbed into the ground growing with new budding leaves.

Unless he used killer moves like triple layered sword wave to completely decimate these treemen, to avoid any future problems.

Otherwise, when these trees grow, they would expend a great amount of the earth qi inside the immortal aperture.

But using triple layered sword wave or flying sword Immortal Gu to kill these treemen was too wasteful!

"If I were a fire path Gu Immortal, this would not be a problem to me." Fang Yuan thought of this, when he suddenly heard a sound, fire was starting from those treemen's corpses.

The fire burnt rapidly, in the blink of an eye, it spread and covered countless treemen!

The fire continued to rage on these treemen's bodies, turning t