Su Jinnian, a Ph. D. In history, woke up and became a substitute princess who was swapped and thrust into the palace of the decisive Beishuo Yan Prince. The original owner was originally a chess piece, but she relied on her unique skills of "archaeological solving" to dig out the treasure maps of the previous dynasty from the palace account books and deduce the weaknesses of the enemy's military formation from the celestial stone carvings. The King of Yan, Xiao Yan, is cold and unfeeling, but always appears quietly when she is in danger; the prince, Xiao Huan, is as gentle as jade, and can change everything in the court in the blink of an eye; the enemy's adviser, Gu Changying, even threatens to make her the "female princess" of the world. When the shocking conspiracy of "fake marriage, real destruction of the country" surfaced, Su Jinnian used the mountains and rivers as a chessboard, and the four male protagonists as chess pieces. He worked step by step. In the end, he was served by the three kings, crowned as the queen, and created eternal peace.
