Who had ever read the most heart-wrenching romance novel?

I want the most sadistic novel, and I want to promote a few ancient romance novels, the most sadistic! He didn't want those who weren't abused. Who knew this book? He only remembered that the female protagonist's father was a minister, and the female protagonist's mother had a disease and needed a medicine. So the female protagonist disguised herself as a man and went to the one with medicine... It was like a hole. Legend had it that many people had gone in and never came out, but the female protagonist still went in. Then, for some reason, she was lucky enough to meet the male protagonist. The male protagonist even found out that she was a woman and did not tell him that she was the daughter of a minister. The female protagonist took the medicine home, but she still had to go get the medicine every month. Once, on the female protagonist's birthday, she went to get the medicine, but the male protagonist brought wine to celebrate her birthday. The female protagonist thought it was delicious, so she kept drinking. Then she got a little drunk, and the male protagonist had sex with the female protagonist... Also, the male lead had brought the female lead to a tomb. The female lead seemed to know that he was the emperor, but she did not say it. Later, the emperor betrothed the daughter of a minister to someone else, and the daughter of a minister was also the female lead, but the male lead did not know. Only then did the female protagonist discover that she had a child, and the male protagonist had promised her to someone else. There was no other way. Her mother told her to leave this place, so the female protagonist left, and the servant girl married on behalf of the female protagonist. Eight years later, the female protagonist returned and brought the male protagonist's child to the place where the medicine was taken. The male protagonist was lucky enough to see her. The male protagonist thought that the female protagonist was married and forced the female protagonist to stay. Because the female protagonist wanted to go home to visit, she left the child behind and went to visit her mother. After a while, the male protagonist came to visit the minister. Only then did he find out that the female protagonist was the minister's daughter and that the child was his son.