At the age of 12, Nie Yinniang was trained in
swordsmanship and the art of stealth, enabling her to assassinate targets undetected. When she returned home after five years of training, her father was terrified of her exceptional skills and reluctant to ask her why she regularly disappeared after dusk without explanation. Having gained insight into the human condition through her training, Nie Yinniang chose a man who made a living by polishing mirrors as her husband. After her father's death, she was recruited by the general Tian Ji'an as an assistant. During
Emperor Xianzong's reign, Tian Ji'an developed an adversarial relationship with another general Liu Changyi, who sought advice from a clairvoyant. Nie Yinniang turned against Tian Ji'an and joined Liu Changyi. A furious Tian Ji'an sent Jingjing'er to kill Nie Yinniang and Liu Changyi, but Jingjing'er ended up being slain by Nie Yinniang. Tian Ji'an then sent Kongkong'er to assassinate Liu Changyi but Nie Yinniang foiled the attempt. Liu Changyi, finally safe, treated Nie Yinniang very well. A few years later, Nie Yinniang left Liu Changyi after he was reassigned to serve in the capital
Chang'an. She even showed up at his funeral to pay her respects and mourn him. == Movie adaptation ==