After familiarizing himself with it for a while, Jiang Feng had completely mastered the eight fire gates and become proficient with Zhu Bai Jianhan's cauldron as well. With all eight fire gates spewing flame at once, he could only extract eight spiritual herbs simultaneously!
Although with his abilities, the moment he finished extracting one herb, he could immediately begin extracting the next.
Jiang Feng was still not satisfied with that speed.
After all, there were 108,888 spiritual herbs. Extracting them this way would take far too long.
This was the limitation of this refining method.
If Jiang Feng were refining pills himself, he would certainly use incantations to construct a Heaven-and-Earth Furnace. This so-called Heaven-and-Earth Furnace was the cauldron he had constructed from pure divine power incantations when he refined the Tianji Nine-Body Divine Pill.
Such a cauldron was not restricted by the thermal conductivity of material substances. Through incantations, he could precisely control the heat of every wisp of flame.
In other words, so long as his three souls and seven spirits were powerful enough, he could extract every spiritual herb in the furnace at once.
But not now!
The method he was currently using borrowed external fire rather than his own flames, so there were inevitably limits to his control. Although the Void Cauldron had created this method of using an incantation array to draw upon fire attributes, it was still nowhere near as handy as using his own flames.
Furthermore, this material cauldron inevitably suffered losses through thermal conduction and could not be controlled with such precision. Thus, when refining divine pills, this material cauldron imposed great limitations.
However, Jiang Feng could not use his own Void Black Lotus Heart Flame and supreme methods to refine the Calamity-Relief Divine Pill before Zhu Bai Jianhan. He could only