Looking for Historical Novels Without Fantasy Elements

The male lead is scheming, and the emperor and empress dowager both dote on him. The female lead is clever and skilled in medicine, but can't fight. She's curvy, and the male lead has been plotting to win her over for a long time. There's plenty of steamy married life, too. He uses all his cunning on her. They have several children, and there are sweet secondary couples as well.