She was the concubine of Duke Dingguo's palace. She was cold-faced and taciturn. She was forced to marry on her behalf and into the unpopular Pei Mansion. The Dasheng Dynasty valued etiquette and law, and women had no right to interfere in politics. Only the winner of the "virtue test" could receive a special marriage ceremony from the emperor. On their wedding night, when her husband coughed up blood, she sat quietly under the red candle and handed over the veil calmly. Is Pei Zhao a sickly prince? He is actually the deposed prince who has been dormant for eight years. She settles old accounts, identifies poisons, and uncovers conspiracies. Every time she solves a puzzle, she gets an anonymous secret letter that hides the secrets of the court. Changes in food prices, secret possession of soldiers and armor, rebellion during the Spring Festival... She solved the situation with her wits, and her reputation gradually grew. From the wedding bride to the chess player, she looks at the world with a cold eye and takes care of every step. He concealed his sharpness and whispered in front of her: "You are here, I am here." The identity was revealed. She was the orphan of the eldest princess of the previous dynasty, and he was the key to her recovery. When the two emperors came to court, the rule of Yunzhao began.