The elder noticed Kranos's excitement, then stored the pills and began explaining to Kranos how beginner alchemy crafting worked. "Using your mana, you will slowly disintegrate the medicinal herbs. After fusing them, you can form a Rank 0 pill. Even though most of these Rank 0 pills are useless, it is beneficial for learning how to use the flame technique perfectly."
After the elder finished telling Kranos everything, he handed him a few batches of medicinal herbs, as he didn't expect Kranos to succeed on his first try. Kranos took the first batch of herbs, then his mana flowed out from his mental space, through his meridians, and into the herbs. Soon, a pale blue light permeated the herbs.
The next moment, however, Kranos was shocked. He could feel that his mana could... extract the impure essences from these medicinal herbs? Didn't the elder say that the reason Rank 0 pills were useless was because one couldn't extract the impurities from them? Then how? Kranos was astounded.