I was originally the daughter of the Marquis of Yongning, but my wet nurse was changed at birth and I became the adopted daughter of the Shen family, a merchant. After the death of my adoptive parents, I became the accountant of the largest silk and satin shop in Beijing with my exquisite arithmetic skills. To celebrate the occasion, the Yongning Hou Mansion forced me to marry the "sickly" Jiulang of the Lu family - in fact, he was the number one carpenter in the capital who was famous all over the capital, but his name remained anonymous due to family suppression. On our wedding night, I entered into a contract marriage with this passionate and upright man. He helped me escape from the control of the Marquis Mansion, and I helped him revive his family business. From testing each other to fighting side by side, I used my accountant's wisdom to help him improve his tools and regain his property; he used his craftsmanship and sincerity to build me defensive skills to resist the persecution of the marquis. When the secret of the real and fake daughter was revealed, and the Marquis wanted to take me back for marriage, my husband publicly offered me a stunning "Flying Wooden Kite" as a betrothal, announcing to the world: She is the only wife of me, Lu Jiuxiao, in this life.