After Entering the Book, She and the Second Male Lead Agreed to Get Married.

Once she passed through the book, she became a cannon fodder female supporting character, who swapped identities with the heroine. Her original wealthy family was taken over by the heroine, her family ties were all taken advantage of, and she was trampled on by the heroine and died miserably... This is the original destiny, and she, Jian Moyan, never admits defeat! Jian Moyan was originally in deep talks with the powerful Bei Yun about cooperation, but how did the marriage agreement come true?