He started out humble and abandoned his concubine, but was framed and charged with the heinous crime of poisoning the emperor's heir. The heroine Su Qingyi, who is proficient in medical skills, in order to protect herself, relies on a silver needle and a pair of discerning eyes to perform autopsy and solve the case in a dead situation, uncover the real murderer, clear the grievances, and has become a blockbuster since then. Using her medical skills as a ladder, she worked her way step by step in the treacherous palace. From an ant who was manipulated at will, she grew up to be in charge of the phoenix seal of the harem and look down on the world side by side with the emperor. The highlight of the plot is that the heroine has no superpowers throughout the whole process, and only relies on the knowledge of integrated Chinese and Western medicine (including forensics, toxicology, psychology, etc.) That is far ahead of the times to break the situation and get the upper hand. Every exciting point is based on rigorous medical logic and human nature. The pace is fast, and the face-slapping upgrades are never delayed.