A Law Student's Journey: Mastering the Law and Earning a General's Rank in the Three Kingdoms

[Strong heroine + loving and destroying each other + rivals facing off + two men competing for one woman]

[Disguised as a man + male rivalry + sibling bonds + law + solving cases]

On the day of her job interview, Lu Yuheng transmigrated into the chaos of the Yellow Turban Rebellion. Using her wits, she helped Liu Bei, Guan Yu, and Zhang Fei time and again, and the four swore brotherhood. Disguised as a man, Lu Yuheng solved wrongful convictions, seized Xuzhou, and killed Lü Bu. Through hardship, she and Zhao Yun grew close and fell in love, only for the fierce Cao Wei general Xiahou Yuheng to step in and steal her away...

This is a novel, not a historical source. Please don't nitpick the historical details.