Mc has an older brother who she saves from family schemes. Old noble lady witness mc scheme and asked her to marry the old lady’s son(wanye/marquis/count). Her brother is only a small official so her status would not be able to marry old lady’s son but it was ok because lady wants it. Old lady thinks she will be a good fair wife. The old lady’s son has legitimate son from his first wife who passed away( name wen shi?) He has 1 concubine who has a daughter, a pregnant concubine, and a scheming concubine (han shi?). The scheming concubine’s father is a marquis/general who fought under the lady’s son. She had a miscarriage and blamed it on mc. Scheming concubine had her brother try to kidnap mc when mc was pregnant but brother and his disgusting friend was defeated. Eventually she gets sent away. Mc treated the husband as a boss after marriage. She didn’t dear to fall in love with him and always closes her eyes in bed to prevent herself from falling for him. Mc helps husband and his legitimate son bond with each other. One day husband over hears mc asking her brother weather he wants a wife who loves him or a wife who protects her interests. This helps hubby understand mc wants him to love only her. at one point husband went away to solve mystery of why his subordinates were getting killed. She heard he was injured and packed up to follow him. They fell in love on this trip. In the end mc has twins. A boy and a girl. Happy ending. Legitimate son and twins love each other very much