Lin Wei, 22, is a third-year clinical medicine student at a medical university. She specializes in emergency medicine and minors in traditional Chinese pharmacology. Highly capable in practical work, independent and resilient, with a slightly mischievous streak, she transmigrates after staying up night after night to study for exams and getting accidentally electrocuted in the lab. Su Qiniang, 17, is an orphan who runs the Su Family Apothecary in the south of Chang’an. Her father was once a medical officer at the Imperial Medical Academy, but after being caught up in palace intrigue, he was demoted and later died of illness, leaving behind the apothecary and a chest of medical books. Su Qiniang had been frail since childhood. Three days ago, she caught a fever after being soaked in the rain and fell unconscious, whereupon Lin Wei’s soul took over her body.