After I Transmigrate into a Book, I Marry My Female Lead's White Moonlight at First Sight

Xu Ran died saving someone, then opened her eyes in another world. She was presented with one good piece of news and one bad one: 1. She was about to inherit an estate worth hundreds of billions. 2. She had only two hours left to live. Xu Ran, now holding an inheritance worth hundreds of billions, didn't want to die. The System told her the only way to stay alive was to find someone with abundant luck and borrow some of it. To save her own skin, Xu Ran tossed a check at the person the System picked. "Be my husband in name, and I'll fund your dream." The handsome, penniless young man agreed, and the two registered their marriage right away. When she saw the name on the marriage certificate, Xu Ran's hands began to tremble. Why did her fake husband's name look so familiar? ...Wasn't it exactly the same as the name of the heroine's one true love in a female-led rebirth novel she'd read before she was reborn? No... Surely it couldn't be that much of a coincidence? Theme: Cherish life, and do your best to help others.