Han Yu had read about all of the herbs mentioned before, and even used two of them in a few pills he'd worked on.
But the way the instructor explained their interactions was something else.
"…When refining an alternative recipe for the Flesh Mending Spirit Pill," Gai Qing intoned, "the Blood Orchid Leaf must be exposed to gradual heat over a minimum span of nine breaths. Otherwise, the active healing component will dissolve prematurely. This is why your Flame Array control must not merely be accurate—but measured."
Han Yu sat up straighter. That was the same issue he'd faced in his first two failures with the pill. He had rushed the early stages and burned off half the active compound without realizing it.
And that wasn't the only insight.
Over the next two hours, Gai Qing explained how herbal essence polarity could be neutralized using harmonizing agents like Stone Dew or Silverroot Powder—neither of which Han Yu had ever used before.
