But when she asked him to thank her monarch, her eyes shone with deep love. Since they separated, her form and voice were strange to her. This poem, written by Bai Juyi in the Tang Dynasty, describes Yang Yuhuan's gratitude to Emperor Xuanzong of the Tang Dynasty and his pain of parting. The "king" here refers to Xuanzong of the Tang Dynasty, and the king represents the imperial power, and the affectionate expression expresses Yang Yuhuan's deep feelings for the king. At the same time, since they broke up, she is unfamiliar with whose appearance and voice, which also means where you will go.