PREVIEW
... the invention of gunpowder, which initially might not have been intended for explosion, just resulting from a failed experiment.
However, compared to those coincidental discoveries, each time only weakly effective ingredients must undergo multiple experimental explorations to find the true ratio, and finally, improve into the real potion formula which is different.
But her potion seems to have had a very high concentration of active ingredients from the very beginning.
Ev ...
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