Transmigrating to Marry My Ex's Frail, Sickly Uncle

My name is Lin Xingyao. I had just broken up with my cheating jerk of an ex when I lost my footing on the stairs of a pedestrian overpass, took a nasty fall, and freaking transmigrated. I was a 25-year-old woman, yet I had transmigrated into the story of a group of people exploring an ancient tomb. To make matters stranger, I had read a novel about those very people. Was it fate or coincidence? Somehow, I had ended up in the body of a sixteen-year-old girl who shared my name, Lin Xingyao. Just then, her scumbag father brought home a concubine and a half-sister three months younger than her. Her mother was so devastated that she hit her head against a wall. She survived, but was left in poor health. Her scumbag father felt no remorse at all. He thought he had wronged the concubine and her daughter by keeping them outside the household all these years, so he doted on that third daughter instead. The original Lin Xingyao never fought back, but I’m different! I’m not going to let you walk all over me! Then, on my wedding day, my childhood sweetheart, who had been engaged to the original Lin Xingyao since they were children, had two bridal sedans bring my sister and me into his household at the same time. Yeah, right! Keep dreaming! I tore off my veil and threw it to the ground, but my scumbag father, the concubine, and my half-sister grabbed me and insisted I share a husband with her, letting her become the principal wife. Since the Empress Dowager had arranged the marriage, they’d be implicated if I went back on it. Please. Did they really think I’d let them dictate my life? I walked over to my childhood sweetheart’s frail, helpless uncle, Yuwen Jin, took his hand, and said, “Yuwen Jin, I heard your fiancée broke off your engagement because you’re so frail. No time like the present! How about we get married today, right alongside your eldest nephew?” Yuwen Jin smiled, wrapped an arm around my waist, and said, “All right.”