Can you recommend a completed soul transmigration novel where the female protagonist transmigrated from the modern era to the ancient era?

Maybe it's about a legitimate daughter or a concubine daughter. She has a biological brother.
I can't remember the details, I only remember one plot.
When the female protagonist's brother took the exam, the female protagonist prepared the exam supplies for him. She was very careful with food, clothing, and accommodation. When the brother took the exam, he even helped others (the children of the same village).
When her brother was taking the court examination, it was also prepared by the female protagonist. She even contacted the people in the examination hall to help them clean the toilets for free in order to make the examination environment better for her brother.
The plot is mixed up
However, I found the article where the female protagonist prepared the test supplies for her brother. It was from the Chronicle of the Rebirth of the Di Daughter.
The plot of cleaning the examination hall may be another story

Answer 1

I recommend "Reborn in a Different World: The Loser Missy." The female protagonist was set as a modern female agent. Because of an accident, she actually transmigrated into an ancient Loser Missy. After that, she broke her fate and gradually became a peerless expert, reaching the peak of the world. The book is finished, welcome to read. I hope you like this fairy's recommendation. Muah ~😗