Yan Zhao, a beast of modern society, transforms into a cannon-fodder concubine who cannot survive three chapters in the book; she is punished by her aunt to kneel in the ancestral hall at the beginning, and her Yin virtue system awakens; her initial skills are basic medical skills, and she secretly treats the injured caravan leader, but she is actually an incognito prince; Qi magic counterattacked and made my sister-in-law embarrassed; my father noticed something strange, and my aunt pressured me to marry the sick and weak prince for happiness; I used poison magic skills to fake my death and escaped, living among the people disguised as a wandering doctor; the system unlocked divination and mind-reading skills, and made acquaintance with various forces; the prince Tracing the whereabouts, they met again but concealed their identity; discovered that the aunt's mother was colluding with the enemy, and the family had evidence of treason; the moral value increased, and the system prompted the existence of a person hostile to the system; involved in the prince's heir apparent, he used his precognitive ability to help the prince avoid danger; the risk of system backlash must be solved It is necessary to balance yin and desire; go deep into the ruins of the Spirit Clan to learn the truth about the system, and the aunt is a traitor to the Spirit; exchange all the yin and virtue for the prince's life-sustaining medicine, and the system disappears; after returning to ordinary people, promote the abolition of the concubine system; open a female school to teach medical skills and influence future generations.