Ancient Matriarchal Society Novels 古代女尊文

At the beginning, the female lead is drugged. Before her subordinates can find her, she runs into the male lead in an alley. He is physically weak at the time, but she still sleeps with him. The male lead isn't a virgin and has a blind younger brother, whom the female lead will find someone to cure later on. The follow-up in the comments is a post asking for help finding the book.