She is the beloved princess of all nations, but she is willing to take the place of a concubine and give her sister to be married to Jingguo as a concubine.
Just to fulfill my beloved sister, so that we can grow old together
She married into Jingguo with a cold heart, but the emperor of Jingguo fell in love with her.
She declined, but he pampered her
When she looked back, he felt that he had no love in his heart
Can love be easily let go, can love be easily discarded? (Emperor's love is not love)