Shen Yunnuan, the legitimate daughter of the Shangshu Mansion, has been engaged to her childhood sweetheart Xiao Yan for a long time. At the capital polo match, Xiao Yan deliberately lost to Jiang Yuanzhou, the prince of the Marquis of Dingbei, in order to win the hairpin gift for his concubine Shen Ruying, breaking his promise to win back the pearl hairpin left by his late mother for Shen Yunnuan. On the day of haircut ceremony, Xiao Yan actually asked Shen Yunnuan to be his concubine in public, and also collaborated with others in an attempt to embezzle her dowry. Shen Yunnuan decisively broke off the engagement and married Jiang Yuanzhou according to her mother's decree that she would marry anyone with a pearl hairpin. In the end, Xiao Yan and Shen Ruying suffered the consequences, and Shen Yunnuan and Jiang Yuanzhou both had children and were awarded the title of first-class imperial wife.
