She is the legitimate princess and the twin sister of the Prince of Chu. Although she had practiced martial arts with the Imperial Guards and the Lord of the Blue Moon Palace since she was a child, which had aroused her bad habits, and she followed her brother to study abroad all day long, she lacked the tenderness and consideration of a woman. But as the jewel in the emperor's palm, she was rejected by a scholar? However, it was this rejection of marriage that made her supposedly happy life take a big turn...