Reborn 99 Days Later, Becoming a Landlady and Getting into Tsinghua and Peking Universities

(Rebirth + Historical setting + Family + Slice of life + Realistic focus + Romance develops in the mid-to-late stages) The family's circumstances suddenly change; the mother tragically dies saving a drowning child. Less than a month later, the father, Liang Yongchang, brings home his mistress and son. Despite his limited education, Liang Yongchang is exceptionally good at math. The sisters' yearning for education, their deep affection for each other, and their longing for paternal love become the strings that control them, tightening and loosening them as needed, ensuring the sisters are devoted to his idyllic life. He tricks Liang Yili into going south to work and earn money for her sister's education, but in reality, this becomes a constant source of his financial support. ...