I Opened a Gold Mine in Republican-Era China [Book Transmigration]

Jin Qian woke up to find herself inside the Republican-era tall tale she'd been reading before bed. And not just anyone, either. She'd become Jin Manman, the male lead's eldest niece, a woman who ruled Shanghai and had effortlessly killed off eighteen fiancees without even pausing for breath! As the only daughter of the Jin family, she had a powerful uncle backing her, a principal for a grandfather who doted on her, and eight mountains of gold and eighty-eight gold shops to her name. Dressed in a bright red wedding gown, Jin Manman counted through the timeline on her fingers. Before she could throw her head back and laugh, her father grabbed her hand. His expression was dazed, though he forced himself to sound calm as he reminded her: "Don't panic, sweetheart. Maybe this is still just a rehearsal. Your dad will come get you again tonight!" Certain she knew the original plot inside out, Jin Manman cheerfully agreed. "See you tonight, Dad!" A month later, Jin Manman stared at her eighteenth fiance, still lively and kicking, and still a complete menace. She was bewildered, aggrieved, and helpless. Goodbye, my handsome paramour; Goodbye, my actor; Goodbye, my eighteen male concubines! The gold-mountain-owning, obscenely wealthy heiress Jin Manman VS the poor young marshal, so broke he can't pay his soldiers and forced to take a wife