She is not a time traveler, but she always "sees" strange fragments of knowledge when touching corpses. Su Yingxue, a woman who bears the stigma of her family and is forced to pick up the lancet, just wants to settle down in the morgue. However, an unsolved "Jade-Faced Fox" case involving the royal family pushed her into the center of the storm. Faced with the iron law that "the skin of the body depends on the parents", she used "thermal imaging autopsy" to identify poisonous injuries, and used the "insect evidence chain" to identify the real culprit, stepping on the edge of ethics every step of the way. From the morgue to the court, from the widow's trade to the imperial examination room, she held a scalpel in her hand, not only cutting open the corpses, but also trying to cut open the strict and decaying old system. This is a gentle but firm institutional reform launched to the entire era with science as the edge and truth as the basis. Let's see how the widow Su Yingxue can use the scalpel to break the thousand-year-old iron law!