The heroine Su Qinghe: a third-year student majoring in modern clinical medicine. She is good at basic surgery and pharmacology knowledge. She has a calm and tough personality. She is a bit socially anxious but has a sense of responsibility when encountering problems. She traveled through time due to an accident in the laboratory. Male protagonist Jamel Xiao: He is a member of the fourth rank of the Tang Dynasty and is a member of the Zhuguo Kingdom. He has great military exploits but suffers from old wounds and has a taciturn temperament. He secretly investigates old cases in the court. Era background: In the late Kaiyuan years of the prosperous Tang Dynasty, there was a crisis hidden under the prosperity of Chang'an. Folk medical skills were limited and witch doctors were prevalent. Core clues: The female protagonist is based on modern medical skills, and the male protagonist becomes attached to the female protagonist due to an injury. The two redeem each other and go through thick and thin together.