(More everyday life + not a power fantasy about a strong female lead + little use of the space and System early on + exclusive romance)
He Xianhui transmigrates into the body of a disfigured young maid serving the son of a Qin hostage prince during a chaotic era. Fortunately, her spatial dimension comes along too, and she also gets a trading System.
She thinks she's arrived in an unfamiliar dynasty, but then realizes something seems off... Zhao Kuo, Lü Buwei, Qin Yiren, Qin Zheng: aren't these people from history books?!
Xianhui does her best to cling to Qin Zheng, her future powerful backer, successfully gets her freedom, and even becomes his fake cousin.
But after she comes of age, why is every man she likes either in love with someone else or still pining for a past love? Why do her marriage prospects never work out?
Qin Zheng smiles. "What do you think, Cousin?"
A chill runs down Xianhui's spine. Why does something feel off?
[An alternate-history Warring States era. Everything in this story is pure fabrication, so don't take it seriously.]