Ye Qingxuan was ordered by his master to go down the mountain to fulfill his engagement. Originally he only wanted to save the head of the Su family and check whether his mother was alive or dead, but in the storm of Jianghai wealthy family, he discovered a huge network covering medicine, capital, underground forces and international dark organizations. The Su Family Disease Bureau, the conspiracy of famous doctors, underground gangs, and capital hunting came one after another, and the Nine-Xuan Huitian Needle in his hand and the Xuanyang Blood in his body were the existences that all dark forces dreamed of and feared the most. From the Jianghai to the capital, from the ancient medical conference to the capital trial, from the ghost in the Dragon Doctor's Department to the experimental hell on Sunless Island, Ye Qingxuan saved people, destroyed poisons, and killed enemies along the way, and he also approached the truth about his father's murder and his mother's imprisonment. In the end, he is no longer just a young man in the mountains who protects those around him, but chooses to cut off the source of pain in the name of a doctor, defeat the Night Emperor of the Dark Realm, rescue his mother, reestablish the order of medicine, and work with Su Wanqing to send life-saving medicine back to the world.
