As a little mermaid who strives for my sister's life-long happiness, I decided to marry for my sister! My husband doesn't love me? It doesn't matter! The single prince Liangdi can climb the wall and go out to play every day. The female supporting role competes with me for a man? It doesn't matter! The heroine's brother is my childhood sweetheart. The regent seeks power to usurp the throne? That's not possible, my husband is the crown prince!
Purpose: To show how a young woman gains love, friendship and growth in the turbulent court intrigues.