C1748 Water Falling out

"Cough cough …" Lin Long coughed dryly twice, then said, "Actually, I did not get any secret scriptures from some cave before, but instead met an old man. That old man taught me a lot of knowledge about alchemy, but, because my abilities are limited, I simply do not have the strength to refine any medicine, which is why I know about this but am unable to refine any of them