What novels are there that tell the story of the female protagonist marrying the silly king after transmigrating? The female protagonist has medical skills, and the male protagonist is silly during the day and returns to normal at night?

There was a novel in which the female protagonist was granted a marriage to a silly king after she transmigrated. The female protagonist knew medicine, while the male protagonist was silly during the day and would be fine after dark. In the second or third chapter, the female protagonist was about to get married to the king's mansion and was about to rest that night. The male protagonist was injured and jumped into the woman's room from the window. The female protagonist saw it and saved him.
I've only read a few chapters and I've forgotten the title.

Answer 1

The female lead was the world's number one assassination organization's genius divine doctor. She transmigrated into the General's Estate's ugly woman and was married to the silly king. The male protagonist had the mind of a child and the appearance of a demon, but he could regain his clarity in the dark night. The female protagonist was proficient in medicine. The two of them fought against each other and became the Evil King and Poison Concubine. I hope you will like this novel.