Refining Dripping Flame Ore was extraordinarily difficult for others; even in a month, they might not be able to smelt a single piece.
Extracting it into Dripping Flame Flowing Gold was already the limit for many warriors in the Heaven Realm.
Refining the flowing gold further into crystalline gold, with every grain undergoing the most perfect purification, was an even more impossible task. Of course, for Yue Yang, who possessed the Nirvana Flame, this was mere child's play. In his eyes, the Black Flame Soul Crystals dug out from the Black Flame Lord's body—energy crystals carrying powerful will and soul imprints—were somewhat difficult.
As for a Heaven Realm strange flame like Earth Kui Yin Fire, normally tranquil but capable of erupting into a heaven-shaking explosion once its balance was disturbed, that was what truly counted as troublesome.
If judged by the standards of the transmigrator's own worldview, refining Dripping Flame Ore was at most G-rank difficulty—child's play, something that could be done with a wave of the hand. Purifying Black Flame Soul Crystals was not too difficult either, barely D-rank. But a freakish flame like Earth Kui Yin Fire—if Yue Yang wanted to absorb and refine it—the difficulty was at least only a tiny bit lower than the divine-grade difficulty of Fire God Soul-Refining Grass... And if Fire God Soul-Refining Grass could not be refined, he could simply fail and try again. But if he failed to refine Earth Kui Yin Fire, he would face a heaven-shaking explosion!
It was impossible to absorb and refine Earth Kui Yin Fire in the laboratory of the Heavenly Net Imperial Palace.
If it exploded, the entire imperial palace would likely be razed to the ground. Aside from the buildings within the Mirage protective barrier, nothing elsewhere would remain; everything would be reduced to