C988 I Can't Believe It
Simply put, refining a precious medicine was like melting a liquid, then fusing it with a liquid, then removing some impurities and fusing them together to stimulate the medicinal strength within. If one did a good job, they could also infuse something else into it, such as an array formation to activate the medicinal strength, merging it with some natural laws, and so on.
If that was the case