The Silly Concubine's Smile Is Charming

She is the legitimate daughter of Ye Mansion. She lost her mother when she was young due to being framed by a concubine. Her biological father did not care for her, and she was left alone and helpless. She had to pretend to be stupid in order to live a safe life. He is the legitimate son of the royal family, and the position of prince should have belonged to him, but because of his elder brother's ambition, he had to hide his capabilities and bide his time, competing with him. The two people who had nothing to do with each other originally became a pair because their sedan chair was switched, and they accidentally became a couple and became the most "silly" couple in history. Let's see how a couple pretending to be crazy and acting stupid support each other, "slay demons" along the way, and finally inherit the throne and become the most enviable pair of mandarin ducks in the world...