49 Skill Advancement, Divine Soul Pill Refinement Technique

The process of making the earth and wind spirit pills was not too difficult for Lu Yuan.

The difficulty of refining these two pills wasn't in the technique but in the collection of raw materials.

Take the wind spirit pill as an example. If Lu Yuan wanted to concoct a wind spirit pill that could assist in the cultivation of the special divine ability, Formless Squall, he would need the blood essence of a bird-type wind-type demon king as a drug primer.

There was no need to explain how difficult it was to kill a demon king. After all, it was an existence comparable to the Core Formation Stage.

The last drop of a wind-type demon king's blood essence in his hands had only been managed to save by being especially frugal.