The protagonist, a young Miao woman from deep in the mountains who practiced medicine for three generations. After her father died from injuries sustained by a vengeful family over a medical dispute, she was forced to marry as repayment but was saved by her aunt Qiu Mengyuan who paid two thousand yuan. She arrived at Wankou Village in Shihai County on May 7, 1983. Her soul fused with that of a wandering poison doctor from an ancient feudal dynasty, granting her memories of healing with silver needles, refining medicines, and concocting poisons. This fusion made her personality colder, more ruthless, and decisive. She is plain-looking in blue clothing but has a delicate, mysterious face. She climbed a tree to watch the wedding commotion and befriended Yuan Yi.
