What's the story of everlasting regret?

Song of Eternal Sorrow tells the love tragedy of Li Longji and Yang Guifei, which is a classic in the love stories of emperors in past dynasties.

Tang Xuanzong loved beauty, and Yang Jia's daughter Yuhuan was born beautiful. After Xuanzong's election, he loved it very much, and eventually he was greedy for sex and misunderstood his country. An Lushan soldiers rebelled, but they escaped. On the way, they were forced by their minister to sentence Yuhuan to death. After Xuanzong, he often missed and lost sleep. Lin Qiong has a man who knows Yin and Yang in troubled times, feels the feelings of Xuanzong, and is willing to find the soul of Yuhuan for heaven and earth. Later, a fairy who was too real was found in Haixian Mountain. When the fairy heard the news of Xuanzong, she was sad and happy, and she couldn't name it. She took a hairpin to see the emperor and took it as an oath. Cherish immortality forever, this feeling is hard to last, this is a song of eternal regret.

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Song of Eternal Sorrow is one of Bai Juyi's most outstanding works, and it is also one of the models of the close combination of lyric poetry and narrative poetry in China's classical poetry. At the beginning of the poem, both the hero and heroine were condemned, but with its development, the poet enriched the story with his own feelings and imagination, giving this love tragedy a more universal meaning, which made the author and readers have a high degree of sympathy for it. To some extent, it broke away from the true colors of history and became a sentimental "amorous feelings" poem, mainly praising the love between Li and Yang.

Xuanzong made great efforts in his early years, so Kaiyuan ruled the world. In his later years, he was dissolute and had no way, so he had gone with the world. Faced with this concrete reality, the poet has formed contradictory and complicated feelings for this natural elder, sometimes praising beauty, sometimes remembering it, and sometimes criticizing it, while Song of Eternal Sorrow has both. This is determined by the poet's understanding of historical events and social life.