The pairing is set: Li Erfeng × A Luan.
A heads-up: Li Erfeng will have consorts. They won't be mere decoration, and he will have children with other women, too.
A Luan and Li Erfeng's views on love reflect the era they live in. He won't neglect a woman he loves or throw her into the Cold Palace to torment her and break her heart.
The story will touch on history, but please don't nitpick the details too much. If anything seems familiar, go by the choices A Luan and Li Erfeng make.
Her father had just died when her third brother pointed at Changsun Luan and screamed, “You jinx! You got Father killed! Get out of the Changsun family!”
Just as she finally secured a marriage match, chaos engulfed the land, and her new husband's family came under the emperor's suspicion, leaving them in peril.
The haughty Zheng Guanyin was aggressive and condescending. “A concubine-born daughter thrown out of her family? I'm the one fate chose for this world. It's your good fortune that I want your husband, so hurry up and make room for me.”
After he rejected her advances, she seethed with resentment. “If I can't marry you, Li Shimin, I'll marry your elder brother and become your sister-in-law.”
The Sui emperor's daughter put on a pitiful act. “Your Highness, I am carrying the prince's child. Please let me stay, even if I have to live like a cat or a dog.”
The rebellious crown prince, Li Chengqian, declared, “Mother, Father, I don't want to be crown prince anymore. My goal is to conquer a new continent.”
The scheming Ninth Prince, Li Zhi, said, “If Mother becomes emperor, there will be too many constraints. I would rather be a prince, the fastest blade in the Tang Empire, cutting down every corrupt official. Whoever destroys the Tang, I will destroy.”
Author, please don't stop updating. I finally found this book. It's about Li Shimin and Empress Changsun. I beg you.