Song for Chess

She is the emperor's last treasure left deep in the palace, and she is scheming just to support herself and her family. However, the turbulent current situation forced her to join the fight for the crown prince, and the overall situation was about to be determined. An accident forced her to embark on the road to marriage. In a foreign country, she used her wisdom to win the love of the people and the friendship of her husband. However, as the two got along day and night, their relationship changed. However, her past experience made her dare not face this relationship. In the future, will the two of them just stop being friends...