Magu (Chinese: 麻姑; pinyin: Mágū; Wade–Giles: Ma-ku; literally: "Hemp Maiden") is a legendary Taoist xian (仙 "immortal; transcendent") associated with the elixir of life, and a symbolic protector of females in Chinese mythology.

https://en.wikipedia.org/wiki/Magu_(deity)

"Hemp-seeds ([mabo] 麻勃) are very little used in medicine, but the magician-technicians ([shujia] 術家) say that if one consumes them with ginseng it will give one preternatural knowledge of events in the future."