When she woke up, Yang Guifei became a gangster in 2026: she had no ID card, couldn't scan codes, and couldn't tell the difference between the subway and the iron monster. She had been a concubine loved by three thousand people, and now she just wanted to survive with her hands. Until the history professor who had studied her for thirteen years saw clearly the jade bracelet on her wrist - "What is your relationship with Concubine Yang?" She replied: "I am her. Do you believe it?"