"This thing requires all its materials to be refined at once; they cannot be processed in batches. And once the refinement is complete, they must be fused together immediately to prevent the medicinal-herb energy liquid from solidifying and affecting the fusion. The difficulty is countless times greater than refining a Ninth-grade Mysterious Pill!"
As he closed the Alchemical Notes in his hand, Lin Feng could not help but let out a heavy breath, forcing a bitter smile.
Although he had long known that Ninth-grade Golden Cores were difficult to refine, the thought of refining tens of thousands of medicinal herbs all at once made his scalp tingle.
Refining medicinal herbs simultaneously looked incredibly difficult, but actually doing it was suffocatingly hard.
After all, refining medicinal herbs was not like brewing medicine on Blue Planet, where one only needed to watch the heat and remember when to toss in each herb.
Some Pill Recipes even allowed all the medicinal herbs to be thrown in at once, with only the heat needing to be controlled.
But when refining a Ninth-grade Golden Core, every medicinal herb required a different temperature and refining time.
While ensuring that all the medicinal efficacy within each herb was extracted, the refiner also had to prevent the herbs from being scorched, lest their energy be damaged and the subsequent refinement fail.
Besides that, the refiner also had to ensure that all the energy within the medicinal herbs had been extracted.
They could not extract only part of a herb's energy, nor leave that energy insufficiently tempered by the flames, resulting in inadequate energy or excessive impurities within the herb essence.
Otherwise, the later stages of refinement would fail, or produce inferior pills filled with impurities.
Of course, for an Emperor Soul Realm expert, maintaining tens of thousands of