(Substitute marriage + the heroine wants no true affection, only wealth and luxury)
Lin Xiaoxiao was a concubine-born daughter. Her birth mother had died young, but luckily her stepmother was kind and her elder half-sister was gentle. They treated her well, and she had never lacked for food, clothing, or anything else. The only thing she worried about was her marriage. In ancient times, marriage could change a woman's fate. Hoping to live comfortably and prosperously in the future, she carefully researched and screened potential husbands. But as a concubine-born daughter, she had little chance of marrying into a higher-ranking family. Just as she was fretting over it, an opportunity arose.
On the eve of her elder sister's wedding, word spread that her fiancé, the Prince of Ning's heir, had a concubine who was exceptionally fertile. Her sister's heart went cold, and she no longer wanted to marry him. But their father feared the power of the Prince of Ning's household and did not dare break off the engagement.
As the family struggled to decide what to do, Lin Xiaoxiao stepped forward and offered to take her sister's place.
Yang Liu was a transmigrated woman with a Good Pregnancy System. She had transmigrated straight into the bedchamber maid role of Xiao Jingren, the Prince of Ning's heir. Thanks to her Good Pregnancy System, she bore Xiao Jingren three children in a row, yet she was still only a concubine. Unwilling to accept this, on the eve of Xiao Jingren's wedding she let the Lin family know she existed. She thought they would break off the engagement, but instead a breathtakingly beautiful concubine-born daughter took her place as the bride. From then on, the Prince of Ning's household was thrown into chaos. The Princess Consort was driven to distraction, Xiao Jingren fell for Lin Xiaoxiao and became bewitched by her, and Yang Liu's Good Pregnancy System stopped working. In the end, the household truly became Lin Xiaoxiao's domain, and she won the wealth and luxury she had wanted.
