Demoted to a Secondary Wife, I Turn Around and Find My Child a New Dad

[Historical romance + strong female lead + both leads are inexperienced + clear-headed heroine + rugged man + secret crush + a daughter wins her father's favor + groveling pursuit] Her husband went off to sit the imperial exams. She stayed home to care for his mother and used her dowry to help with household expenses, paving his way to success. But on the day Gu Huaian passed the exams, he returned with his official honors and another woman, then brazenly declared, “She's a princess, noble by birth, and deserves to be the principal wife. From now on, you will take good care of her. I'll let you remain as a secondary wife, and that should be more than enough!” Sheng Huan left without a second glance. It was just a matter of finding another man! But anything of mine that you spent from my dowry, you'll pay back in full! She planned to make a life of her own with her daughter and enjoy her freedom. She never expected Gu Huaian's younger brother to chase after her, insisting he wanted to be her daughter's father.