C800 Calculate Before

"Puff, puff, bang bang …"

Muffled sounds rang out one after another across the square. These sounds might be pleasing to the ears of most people, but to the ears of an alchemist, they were sounds that would cause a person's heart to shatter.

This sound was the sound of a furnace full of precious herbs, and it was also the sound of the furnace exploding. During the refining process