"Still, I can't be too gentle, otherwise impurities will easily remain during extraction, and I controlled the heat just a bit too much..."
Ye Han couldn't help letting out a soft sigh.
Refining a Seventh-Grade pill was extremely demanding, requiring the heat to be controlled with absolute precision. This first attempt at producing a Seventh-Grade pill had clearly ended in failure. However, Ye Han wasn't discouraged. After all, no matter how talented an alchemist might be, slip-ups were bound to happen. Failure was a common occurrence for alchemists, and the most important thing was to sum up the experience.
Chapter 237