Therefore, controlling the heat is very important, especially when refining high-level elixirs; you will realize how crucial the control of heat is. Because the refinement of high-level elixirs does not allow for any mistakes; the temperature of any type of heat must be minimized within an acceptable range.
Generally speaking, there are four types of heat: Strong Fire, Medium Fire, Slow Fire (Low Fire), and Low Fire.
Strong Fire is used to evaporate moisture or melt solid materials, like the hard material Spirit Stone.
Medium Fire is typically used to refine neutral medicinal herbs, which are somewhat hard but not very hard; they have medicinal properties but are difficult to extract.
Slow Fire is used to stew and decoct medicinal herbs; it is also the required heat for some elixirs that have a longer refinement period.
Low Fire is used to refine materials that are easily volatile, flammable, and meltable.
