Core image: A "fake koi" who is married into the palace as a mascot is actually a secret chess piece that holds the lifeline of the enemy country, swallowing up the chessboard of house fights and intrigues.
Summary of the story: Due to a decree of "good luck and prosperity", Shen Luan, the daughter of a merchant, was given a marriage to the sick prince Xiao Yan. The whole capital thought she was a lucky charm, and even the prince treated her coldly. After the princess entered the palace, rival families fell one after another, and the forces in the court were shuffled strangely. Xiao Yan gradually discovered that this woman who only enjoyed flowers and birds every day was secretly controlling the dark network of information in the entire capital - she was a top spy who had been planted by the enemy for ten years but had already betrayed her, and the plan he had planned for many years to seize the heir was already part of her chess game.
Cool preview: The heroine pretends to be silly and sweet on the surface, but in fact she is plotting against the prince and the court every step of the way. The prince goes from being contemptuous to shocked to begging her not to leave, chasing his wife to the crematorium + losing multiple layers of vests in a series.
