Gu Yunyun is an aristocratic daughter in the capital. Her father is the Marquis of Jing'an, who holds military power, and her mother is Princess Nan'an, the elder sister of the current emperor. She also has an older brother who dotes on her, a little sister who loves to cling to her, and a sweetheart who is always against her - He Xuanran. She had a crush on He Xuanran at the age when her love interest was just beginning. However, once again, at a palace banquet, she met Xiao Chensheng, the King of Wenling who had returned from southern Xinjiang. She thought this was their first meeting. Little did she know that they had already met in the palace when they were young, and after getting along for a while, Xiao Chensheng fell in love with the innocent and lively Gu Yunyun. The purpose of coming back this time was to propose marriage to the emperor, but at this time, Gu Yunyun already had someone by her side. He Xuanran accompanied him and learned that the two had made a baby marriage when they were still in her mother's womb. He was unwilling to kill her royal grandmother and parents, and then blamed He Xuanran, sowing the relationship between Gu Yunyun and He Xuanran. Instead, he replaced her. Just when he thought he got Gu Yunyun, the bad things he had done were exposed and he was sent to the guillotine, ending his miserable life. Gu Yunyun and He Xuanran also resolved their previous misunderstandings, expressed their feelings to each other, and lived happily ever after.
Intention: Reunion after breaking the mirror