I'm looking for an ancient novel! Very urgent! Waiting for a reply online! Please help me!

1. The male lead was a prince. The female protagonist had a half-sister. The male protagonist and the female protagonist were engaged.
2. When the male protagonist and female protagonist were looking for an antidote, they seemed to have already fallen in love with each other and then had sex with each other (this seemed to be because the male protagonist had a poisonous female protagonist's physique that was very suitable for healing).
3. The male protagonist and the female protagonist met when they were young. The male protagonist mistook the female protagonist's sister for the female protagonist (because of something from when they were young). When they got married, he schemed to replace the bride and even drugged the female protagonist, allowing the female protagonist to marry a general. The female protagonist knew from the beginning that the male protagonist was her future husband, so she was very sad at that time.
4. The day after the wedding, the four newlyweds went to see the emperor together. The male protagonist recognized that the female protagonist was the object of sex and was shocked. However, she still did not recognize him as the person from when she was young. The male protagonist wanted the female protagonist to return to his side.
5. That general was very good to the female lead, and it seemed to involve the problems of her previous life.
6. Later, it was discovered that the female protagonist was pregnant with the male protagonist's child. The Empress Dowager forced the female protagonist to drink the abortion medicine. When the male protagonist arrived, it was already too late. Then, the general carried the female protagonist away (this left a deep impression on me). The male protagonist was very sad at that time.
7. Happy ending!

Answer 1

Okay, what kind of ancient novel would you like to read? Is it a historical theme, fantasy theme, martial arts theme, or other types of novels?