Demon Fire Refining Essence was divided into three main phases, corresponding to the early, middle, and late stages of each cultivation realm.
At the beginning, midpoint, and peak of each phase, the cultivator had to temper their magical power once, for a total of nine temperings per realm. Upon completing all nine, they would stand at the pinnacle of that realm, with magical power roughly twenty percent purer than that of cultivators at the same level.
However, Demon Fire Refining Essence also imposed certain requirements on the flame's potency. At present, the Azure Yang Demonic Flame was powerful enough to complete the tempering for the foundation establishment early stage. If Liu Yu cultivated too quickly, however, he would have to find a way to strengthen the flame before it could effectively temper his magical power.
It's time.
With a thought from Liu Yu, the pale azure flame in his dantian suddenly leaped, its radiance growing brighter.
Then the flame slowly descended toward Magic Power Lake, gradually closing the distance between them.
Perhaps one or two breaths passed, or perhaps longer, before the flame finally touched the lake.
The instant they touched, the pale azure flame spread across the entire lake. Before long, it covered the lake's surface, turning it into an azure sea of fire that began to blaze fiercely.
Gradually, Magic Power Lake began to churn and boil, sending up tiny bubbles.
Beads of sweat the size of beans formed on Liu Yu's forehead and dripped onto his robes, soaking them.
The tranquility on his face vanished as well. Pain twisted his features into a savage grimace, alarming to behold.
Although the pain in his dantian and flesh fell short of the pain inflicted on his primordial spirit, he had to grit his teeth and endure every bit of