C386 Two Gusts

Rootless fire was a kind of name, it wasn't a fire that existed in the mortal world. In other words, unlike the mortal world's fire, the rootless fire could only be cultivated after Cultivator had reached a certain realm, and it had a strong killing power, moreover, it was the best choice to refine Pills s. Most importantly, Gu Worm were invulnerable to weapons, and did not fear fire or water