Everyone Becomes a Lord, Starting with a Single Skeleton Soldier

#Period Novels With an Extremely Intelligent Female Lead and No Dumbed-Down Characters

Looking for books similar to She Slung Her Bag Over Her Shoulder and Traveled Back to the 1970s, Where She Can Do It All, from Stirring Up Trouble to Making Money. The female lead must be smart, and that's the key! The supporting characters shouldn't be idiots, and the female lead should be clearheaded, not a bleeding heart or love-struck. Ideally, she's career-focused. Thanks!