The novel that I recommend is " Pleasure on the Pillow: Cold and Arrogant Princess Fairy Grass Concubine ". This ancient romance novel is about the male protagonist's body being poisoned by the cold poison, and the antidote is to consummate the marriage with a woman. The woman will be infertile for the rest of her life, and the female protagonist and the male protagonist will meet in the hot spring. I hope you like my recommendation.