During the Dajing Dynasty, Shen Zhaozhao, a concubine from Dingbeihou Mansion, had her mother die young, and her aunt, Zhou, embezzled her dowry and even wanted to sell her to an old wealthy businessman. In order to protect her mother's relics, she disguised herself as a man and worked in the accounting office of "Fuxing Rice Shop" where her mother was married, and developed a unique skill in checking accounts. Three years ago, she was forced to marry General Gu Yanqing, who guarded the border. The two separated after only meeting once. Gu Yanqing was cold to her, and she thought it was a loveless marriage. Until Gu Yanqing returned to the capital, she discovered that the Zhou family had deducted her monthly payment, and Bai Lian's sister Shen Yueyao had robbed her of jewelry and spread rumors that she was "killing her mother". The usually cold-blooded general protected his wife on the spot: "I, the wife of Gu Yanqing, do not have the turn to be bullied by the people in the Hou Mansion." Shen Zhaozhao borrowed his accounting skills. After uncovering evidence that Zhou had misappropriated public money and embezzled his mother's dowry, Gu Yanqing broke into the Marquis's mansion with the ledger and forced Zhou to return the dowry and apologize. When Shen Yueyao spread rumors, Gu Yanqing produced the medical records from the year to prove that her mother died of illness rather than being "conquered", which disgraced Bai Lian. In the process, the two solved their misunderstanding - Gu Yan was attracted by Juan Xiu's handwriting on her account book early in the morning, but he was too busy with the border war to reveal it. In the end, Shen Zhaozhao took back everything that belonged to him and joined hands with Gu Yanqing so that the Hou Mansion would never dare to despise her again.