Everyone in the capital knew that Gu Yunzheng, the son of Prime Minister Gu, would marry Shen Ning, the only daughter of the Shen family. However, the Yun State stipulated that if a woman was not married until she was twenty, the government would forcibly arrange a marriage contract for her, and she could marry a pig or a dog.

Just as Shen Ning was about to turn twenty, her childhood sweetheart's fiancé, Gu Yunzheng, told Shen Ning that he would take the orphan girl Shen Ning had taken in as his concubine, and that he would marry Shen Ning first.Shen Ning was so heartbroken that she decided to cancel the engagement and marry someone else.However, Gu Yunzheng never believed it and kept getting intimate with the orphan girl in front of Shen Ning.