Eternal regret is Eternal regret, which is a touching seed buried in the poem. As for what you hate, why do you hate it for a long time? The poet doesn't directly describe and express, but through his poetic stories, he shows them to readers layer by layer, realizing that people should try to figure out, remember and feel.
According to the content and plot development of Song of Eternal Sorrow, the whole poem can be divided into four levels:
The first layer, from "the emperor of China, lust is enough to shake the beauty of an empire" to "the emperor's eyes can't fix enough on her", describes how Tang Xuanzong emphasized and sought for color before the Anshi Rebellion, and finally got Yang Guiji, "If she just turned to smile, she would have a hundred spells". After Guiji entered the palace, she was spoiled and spoiled. Not only did he "inherit kindness", but after repeatedly exaggerating the imperial concubine of Emperor Xuanzong of the Tang Dynasty, "her sisters and her brothers were given titles" and completely indulged in singing, dancing and debauchery. The first sentence of the book not only implies the tragic factor of the story, but also plays a role in arousing and guiding the whole poem.
The second layer, from "until the war drum, from the boom of Yuyang, the earth shook" to "when he turned to look later, it was a land of blood and tears", describing the Anshi rebellion, Xuanzong's escape, being forced to give the imperial concubine the death penalty, and writing the "Song of Eternal Sorrow" is the basis of the tragic story. The poet deliberately played down the Anshi chaos caused by Xuanzong's extravagance and wrong country, and deliberately described where they would go. Readers are infected by the tragic atmosphere, rather than rational criticism of history. Chen Hong's theory of "punishing stunners and smothering chaos" in Song of Eternal Sorrow is to make a fuss with a straight face, so it cannot be used as the writing motivation of this poem.
The third layer, from "hiding in the yellow dust blown by a cold wind" to "not dreaming", describes the loneliness and sadness in Shu after Yang Guifei's death, which is a kind of "sad color" and "heartbroken sound". When Chang 'an returned to Korea after the recovery, it surpassed Mark and "that memory, that depression. Where is her jade-white face? " . After returning to the palace, Chi Yuan is still the same. Things have changed, and the lingering lovesickness makes people sad.
The fourth layer, from "there is a Taoist who lives in Lingqiong" to "this worry is endless", describes that Xuanzong sent alchemists to find Yang Guifei's soul, focusing on her lonely and sad memories of her past love life.
Bai Juyi used romantic methods to go from heaven to earth, and finally let the imperial concubine reappear in the fairyland and on the ethereal fairy mountain with the image of "tears falling on her sad white face, like spring rain falling on pear flowers". The expression of "love" has gone beyond the emotional entanglement between emperors and concubines, and is more of a poet's subjective ideal element, which has already gone beyond the scope of historical facts, showing the contradiction between subjective desire and objective reality. The last sentence "everlasting, everlasting; One day both will end, and this endless sorrow will last forever "is a sigh and cry of love, which is a lament that love is spread by fate and destroyed by political ethics." This hatred has transcended time and space and entered an infinite realm. In this way, the poet expressed eternal love with "everlasting regret", that is, pointed out the theme of the whole poem.