Ask for the name of a romance novel

I forgot what her name was. The general content was like this: Originally, the elder sister was going to marry the male protagonist. The female protagonist helped her elder sister escape and married the male protagonist. The male protagonist's elder sister finally returned. The male protagonist's younger brother and the female protagonist's elder sister seemed to have slept together and had a child. It seemed that the male protagonist's career was in danger and he married a woman. However, the male protagonist had already gotten a marriage certificate with the female protagonist long ago. The female protagonist did not know about it. The male protagonist could get married in another country. The male protagonist and the female protagonist's sister had a fake marriage. In the end, the male protagonist was considered to be a bigamist. What was it? I forgot... So far, this is what I think...
The correct question was this. The male protagonist and female protagonist's families were both rich and powerful. The female protagonist knocked the male protagonist unconscious for some reason. Helplessly, the female protagonist and the male protagonist's family allowed the female protagonist to marry the male protagonist. After about a year, the male protagonist woke up.

Answer 1

The name of the romance novel was Feng Qiuhuang. This was a very famous online novel about a woman who was wrongly imprisoned and how she used her wisdom and courage to regain her freedom and happiness. The plot of the novel was full of ups and downs, and the characters were vivid and loved by readers.