The Manxianglou, a gathering place of famous figures in Chang'an City, was suddenly attacked by blood crows and involved in a mysterious murder case. The deceased was alive and well, but after death, they seemed to be quickly drained of their essence. The 'divine medicine' that disappeared for ten years reappeared in the martial arts world... famous in Chang'anThe cold faced female detective Shangguan Nanzhao inspected the scene and inferred that the case was related to the massacre of her fianc é's family ten years ago. The case is complex and confusing, and people from all walks of life are involved in it due to the use of 'divine medicine' prescriptions. Who is the real culprit?Who is the mastermind behind the scenes? Nanzhao approached the truth step by step, with numerous dangers and unexpected endings.