The Soul Travels Through the Tang Dynasty, and the Investigation Begins

As a forensic doctor, Song Du accidentally traveled to the Tang Dynasty and unexpectedly became a disciple of a strange old man who was proficient in traditional Chinese medicine, acupuncture, herbal medicine and poisons. After being taught by the old man for six years, the old man passed away six years later. When Song Du turned 18, he came to Luoyang to join his senior brother Wang Xiu of Taiyuan Wang in accordance with the old man's last wish.