I recommend the ancient romance novel,"The Mighty Imperial Concubine's Free and Unfettered Doctor", to you! The female lead was known as the Ancient Doctor Ghost Hand. She was good at healing and knew how to poison. She had big breasts but no brains and had a heartless personality. She had transmigrated to King Luochuan's fourth daughter and was involuntarily approached by a man. In the end, a sweet love had developed. This novel matches the keywords you provided. The female lead also has big breasts. I hope you like this fairy's recommendation. Muah ~๐