C2739

Yun Jinxiu said: "The evidence is indisputable, but I checked the recipe of the medicine that Old Zhan concocted that day. There is a herb called Water Valley Grass in that recipe, and the medicinal properties of the Water Valley Grass can coincidentally neutralize sulphur powder, so during the process of concocting, no matter how you refine it, it cannot cause a furnace to explode