A National Treasure Matchmaker, But I Won't Run from the Coldhearted Young Master

At an appraisal event, Sun Qianxun is drugged by her own younger sister. She escapes to a hotel, but stumbles into a strange man's room. The next morning, she wakes to find a breathtakingly handsome man beside her and frantically feels around for her wallet. Oh no, she forgot it. All she can do is take off her ancestral phoenix jade pendant and slip it under his pillow. "Sorry, handsome model guy. This jade pendant is worth a million. Call it payment for one night." Only later does she learn he is Ouyang Jin, the young master of a family renowned for medicine and poison. He grips the phoenix pendant and sneers, "You think you can get away?"