In the fourth year after my eldest sister Song Feiying married to Beiman, I was growing up. My father pointed me out to Jingbei Prince Nangong Xiao. There were no three matchmakers and six betrothals, no dragons and phoenixes, no flowers and candles, and even no sedan could be carried from the main entrance of the Hou Mansion. It is a great shame and humiliation for the royal family for a princess to marry a prince as a concubine. But unfortunately, Marquis Nangong had already made a vow - he would never have a wife without Fei Ying. Seeing me becoming more and more similar to my eldest sister, my father's eyes became red again and again. He said that being a wife and a concubine was just an empty name, and asking me to marry her and serve my husband would be regarded as doing my best for my sister. I don't understand why we women must be used to settle disputes that men can't settle? Can't I fight back to Beiman with Nangong Xiao and get my sister back?