Sword Spirit Confuses the Tang Dynasty: the Tribulation of the Golden Age

She was disguised as an orphan girl who died tragically during the Anshi Rebellion. She was burdened with a blood feud, but she became the lowest concubine in the powerful Jiedushi family. During the day, she was gentle and charming, and at night, she worked hard to practice the secrets of Xuanmen, just waiting to kill her enemies with her own hands. But gradually she discovered that there was a shocking secret volume related to her life experience hidden in the secret room of Jiedushi's study. What's even weirder is that every night when the moon is full, the dragon pattern that appears on his heart is exactly the same as the demon king in her dream... The imperial power is in conflict and the feudal towns are divided. In this turbulent game, is she a pawn or a chess player?