After Rebirth, the Real Daughter Steals My Concubine's Place

I am the fake daughter of the Lin family. In my previous life, after my parents recognized the real daughter, they said that I had stolen her good life, so they gave up the royal marriage between me and the general to Lin Wanwan. Lin Wanwan was generous enough to let me be his concubine. On the day of her wedding, the general ordered him to go to war, so she stayed alone in the empty room. After that, her mother-in-law treated her harshly, which made her work day and night, and she became ill over time. After the general returned, I won the general's favor. When I was five months pregnant, Lin Wanwan stabbed a gold hairpin into my stomach, killing one and two. It was only when I was dying that I learned that before the Lin family became prosperous, my parents saw that I was dressed in an extraordinary way and specially exchanged their daughter for me. I was already richer and better off than Lin Wanwan. When I open my eyes again, I go back to the day I got married. Lin Wanwan wanted to be the general's concubine, so she generously gave me the position of mistress. Idiot, how can a concubine who is inferior to others have a good life? And this time, I will not miss the opportunity of royal recognition.