Yun Heng, a criminal slave of the Huanyi Bureau of Jingguo, was born with a cinnabar mole between his eyebrows, but he was burdened with blood debts from the Imperial Hospital. Seven years ago, my father was falsely accused of using abortion pills to kill the fetus of a noble concubine. The men of the Yun family were beheaded and the women were used as slaves. Under the guidance of the old woman in the cold palace, she hid the poison in the menstrual belt, tempered the poison in the silver bell, and carved her revenge into the astrological time - every time she killed someone, she would die in the twenty-eight stars, and she would judge the sin in the name of heavenly punishment.