This plot should be from the book "Crazy Wife, Don't Run". The male protagonist wanted to hold a new wedding for the female protagonist, but the female protagonist mistakenly thought that he wanted to marry a concubine. She cut the male protagonist's finger with a dagger and dripped the blood on the white silk of the wedding bed to show that she was unwilling. Later on, the male lead figured out the misunderstanding and found an opportunity to explain it to the female lead. I hope you like this fairy's recommendation. Muah ~😗