Lin Wei, a modern emergency department medical student, accidentally traveled to Chang'an in the prosperous Tang Dynasty and became Shen Qinghuan, the daughter of a medicine shop owner. She relied on her modern medical knowledge to save lives and heal the wounded in ancient times, but due to a street emergency, she encountered Xiao Jingyan, a young general who was on patrol incognito. When Western suture meets Chinese acupuncture, and when independent female consciousness collides with feudal ethics, she used a lancet as a pen and herbs as ink to write a touching love story that spans time and space in the city of Chang'an. From the drug store in the market to the palace, from misunderstandings to life and death, let's see how the time-traveling medical girl bloomed in the prosperous Tang Dynasty and formed a love affair with the cold-faced general in troubled times.