Stunning Imperial Concubine: the Devil Gently Dotes on Her

She is the most beautiful woman in the world, but she is forced to marry a notorious evil king in order to avoid being hunted. She thought it was a deal, but found that every night the cold devil would press her against the bedside and whisper: "I am a betrothal in the three realms, is it enough to marry you?" She ran away, and he chased her, until that day she pierced his heart with a sword.