Help! I Turned My Brother-In-Law into My Husband

[Old sayings + sweet pets + double cleansing + long-term love + refreshing articles + 1v1] The Shen family has twin sisters, the apple of the eye of the General's Mansion. The eldest sister, Shen Qingqiu, was a talented man and married into the Marquis Mansion to assist the cold and rigid eldest son, Gu Yanzhi. The youngest daughter, Shen Zhixia, was charming and charming, so she was given to Gu Minglou, the romantic and uninhibited second son of the Hou family. Unexpectedly, on the wedding night, due to some strange combination of circumstances, the two sisters went to the wrong bridal chamber. Shen Zhixia, the eldest daughter of the eldest sister, found out that she had slept with her future brother-in-law, and was frightened to death. The deal is done, and the two families can only make mistakes and exchange marriages. Shen Zhixia didn't care, as long as her sister was still in the capital, she could marry anyone. But the new husband Gu Yanzhi is too cruel! She must walk dignifiedly and sit sedately. She is not allowed to eat preserves in the study. She is not allowed to cry even when she sleeps at night. What a bad guy! Shen Zhixia cried and complained to her sister, but she didn't know that her cold and strong sister was disciplining her ex-fiancé, the number one dude in the capital, into obedience. And here, Gu Yanzhi looked at his crying and sobbing little wife, who violated all his rules for the first time and awkwardly handed over a piece of osmanthus cake, "... I won't do this next time." Later, the entire capital knew that the unkind eldest son of the Marquis of Jing'an had turned into a disciplinarian who humbly chased after his little wife, begging her to look at her more.