Ling Qingyi, a female Taoist nun who is well versed in the mysteries of the "Alchemy Sutra", went down the mountain to collect medicine, and broke the chaos of folk "alchemy" that abused cinnabar and caused poisoning. Based on the "Taoist Pharmacological Spectrum", she uses silver needles to identify medicines (such as the difference in the crystal shape of realgar arsenic), skillfully uses yin and yang and the five elements to harmonize the medicinal properties (coptis chinensis cold to control aconite heat), and uses alchemy philosophy to resolve the "emotional poison" of infatuated men and resentful women. She went against the grain and built a "Xuanmen Medical Clinic" to transform the Xuanmen elixir into a good remedy for the common people. Faced with lay disciple Xiao Yunxiu's passionate passion and doubts about medical ethics, she responded with the theory that "emotional attachment is fire poison" and made a promise with a jade hairpin. In the end, she promoted the "Ethical Code of Alchemy and Taoism", and in the world of smoke and fire, she used Taoism to integrate love and benefit the common people with benevolence.
