(Transmigration + System + taking down villains + romance with powerful men + double standards + fiercely protective + devoted to each other) Lin Yu transmigrates to the Republic of China era and becomes a married woman far from home. She gives birth right after arriving and suffers domestic abuse. Just as she plans to escape her abusive husband, she unexpectedly gets a System. She works for the System and, along the way, falls in love with a powerful man. After killing her abusive husband, this nobody rises to power and goes on a rampage, killing without mercy. In a foreign country, she becomes a spy. In these turbulent times, she leaves no villain alive. She'll avenge both her country and her family!
Romance: She and her deskmate both secretly love the same person, Ji Shuai.
Her deskmate transmigrated with her! They get along very well at first, but later, when her deskmate can't have Ji Shuai, she kills him. That's a family grudge. And to her surprise, her deskmate has become a traitor to their country! That's a national grievance! She'll avenge the man she loved, kill the villains, and become an aggressor herself! But an even bigger conspiracy is waiting for her…