Although refining his own Life-bound Treasure would make the process much easier.
It was still a Treasure, after all. No matter what, the required proficiency in artifact refining could not be too low.
Otherwise, its quality would inevitably suffer, something Liu Yu could not accept.
So despite being somewhat pressed for time, he still had to carve out a little time each day to study artifact refining.
Through extensive practice accumulated day after day, he had already reached the level needed to refine Superior-grade Magical Artifacts.
Sizzle, sizzle.
Beneath the golden-red pill flame, several low-grade spirit materials melted easily into liquids of various colors, like molten iron, suspended in the air.
A Golden Core Cultivator's pill flame was already immensely powerful, capable of producing considerable effects even in battles against cultivators of the same level.
Its temperature even far surpassed ordinary subterranean fire.
Using it to process these low-grade spirit materials was like firing a cannon at a mosquito. Naturally, it was effortless.
After merely seven or eight minutes of heating, spirit materials that were normally incomparably hard to low-level cultivators were easily melted down.
Their impurities were separated out bit by bit.
Melting and purification, removal of impurities, shaping, and inscription of Runes.
Illuminated by the golden-red firelight, Liu Yu looked utterly focused. His divine sense controlled the entire process, separating the impurities from the various spirit materials bit by bit.
At this stage, the advantage of his cultivation became abundantly clear.
With a Golden Core Cultivator's powerful divine sense and mental strength, he could easily divide his attention among several tasks, refining multiple spirit materials simultaneously and greatly accelerating the entire process.
Of course, the faster the process, the faster he burned through spirit stones, since Liu Yu's chances of success were far lower than his chances of