Influenced by Chu literature in the pre-Qin period, the literature of Han Dynasty was quite romantic from the beginning. However, its romantic style has gradually changed with the changes of the times. As far as sacrificial music songs are concerned, the romantic style of poems in the period of Emperor Wu of Han Dynasty has obviously changed compared with that in the early Han Dynasty.
The Song of Sacrifice to the Suburb written by Yuefu literati in the period of Emperor Wu of the Han Dynasty reflects the evolution of the lyric way of poetry in the period of Emperor Wu of the Han Dynasty. In the early years of Emperor Wu of the Han Dynasty, Yuefu literati's Song of Sacrificing the Suburb was lyrical, such as Poems of Five Emperors in Lindi Temple, which mainly praised the literary martial arts of the Han Empire and expressed collective feelings, with a broad realm; Poems such as "In and Out of the Sun" written by Emperor Wu of the Han Dynasty in his later period have turned from expecting the prosperity of the empire to expecting the continuation of personal life, and the lyric style has gradually turned to the individual's heart.
In the later period of Emperor Wu of the Han Dynasty, Yuefu literati paid attention to collecting and sorting out works lamenting the shortness of life and thinking about the existence and value of life, which could better show the transformation of Western Han poetry from outward expression of collective feelings to inward expression of personal feelings. For example, "Go out in the morning and return at dusk" [1 1](p.228) in "A Battle South of the City" reflects deep thinking on the war that destroys life; Princess Wusun's elegy "My family marries me, I am far away from Wusun Wang" [2] (Biography of the Western Regions, p. 3903) describes the unfortunate experience and inner sorrow of being forced to marry a foreign country; Li Yannian, who is good at voyeurism, also adapted two elegies, Autumn Record and Haoli, which were produced during the reign of Emperor Gaozu. From the collection and arrangement of these works, it is not difficult to find that under the influence of the change of the concept of poetry of Emperor Wu of the Han Dynasty, the poetry of the Western Han Dynasty gradually changed from praising and expressing collective feelings to expressing personal feelings and thinking about life. This seemingly shifting literary fashion in the decadent Tang Dynasty actually reflected the gradual awakening of the individual life consciousness of the Western Han people, which opened the precedent for the general awakening of people's life consciousness in the Wei and Jin Dynasties.
Thirdly, the poetic concept of Emperor Wu of the Han Dynasty and the literary significance of the evolution of poetry in the Western Han Dynasty.
As far as the existing literature is concerned, the creation, collection and arrangement of poems in the period of Emperor Wu of the Han Dynasty were mostly carried out under the guidance of Emperor Wu's imperial edicts and poetic concepts. Its creators, collectors and organizers are mostly doctors, envoys, literary attendants and unfortunate ministers in the position of courtiers. Under such a poetry production mechanism, not only did Emperor Wu of the Han Dynasty praise the beautiful poetry concept and ask the officials to "polish" the poetry, but his personal desire to prolong life also became the object that the officials catered to. As the saying goes, "The king of Chu was thin-waisted and starved to death in his palace" [17] (biography of Ma Yuan, p. 853). Because Liang Wudi asked his courtiers to make music songs for him, in order to cooperate with suburban worship and praise virtue, they presented him with suburban worship music songs and poems that expressed the harmony between monarch and courtiers and preached virtue. Since Emperor Wu of the Han Dynasty asked literature to express the taste of immortality, courtiers have appeared works that express the content of immortality enjoyment. Because Emperor Wu of the Han Dynasty asked for new changes in the form of poetry, courtiers used new voices to cooperate with Yuefu poetry. It can be said that there are many reasons for the evolution of poetry in the period of Emperor Wu of the Han Dynasty, such as poetry content, artistic form, lyric style, etc., but the influence of Emperor Wu of the Han Dynasty is one of the important factors. The same emperor's different ideas about poetry in different periods can have an impact on the evolution of poetry at that time. The fundamental reason is that his autocratic imperial power has played a role.
Emperor Wu of the Han Dynasty, as a lecherous son of heaven, respected Confucianism in the Five Classics during his reign, which deeply influenced the writers at that time and continued to the later generations. In order to stabilize the regime and meet the needs of personal enjoyment, Emperor Wu of the Han Dynasty expanded the function of Yuefu, and invited famous literati such as Sima Xiangru and outstanding musicians such as Li Yannian to write songs and poems, which influenced the evolution of poetry at that time and objectively promoted the prosperity of poetry in the Western Han Dynasty. This contribution to the history of literature is undoubtedly enormous, but its negative impact is equally obvious. Comparing the contents of The Book of Songs with those of Yuefu in Han Dynasty, it is not difficult to find that the agricultural poems and corvee poems in The Book of Songs are not found in Yuefu poems in this issue. There are many love poems in Guofeng, but there are few poems expressing the love between men and women in this issue of Yuefu poetry. There are many works that sharply criticize current politics in The Book of Songs, but there are few works that satirize current politics in Han Yuefu poems. This change does not mean that the agricultural production activities in the period of Emperor Wu of the Han Dynasty were less than those in The Book of Songs, boys and girls' desire for love was low, the corvee was reduced, and the situation was peaceful. As far as corvee is concerned, Emperor Wu of the Han Dynasty devoted himself to expanding the territory, which led to a very heavy corvee. "Salt and Iron on Corvee" said: "Those who are near travel thousands of miles, and those who are far away cross Wan Li, which lasted for two periods. When the eldest son doesn't return, his parents are concerned, his wife sighs, his heart is filled with resentment and hatred, and meditation hurts into the bone marrow. " [13] (page 520) However, these works of "sadness" and "chanting" about the corvee were not included in Yuefu poems. The reason is, of course, related to Yuefu literati trying to cater to Emperor Wu and avoid rebelling against Long Lin. This phenomenon strongly shows that Emperor Wu of the Han Dynasty relied on imperial power to support the creation, collection and arrangement of Yuefu poems, which not only promoted the evolution of Western Han poetry, but also led to the change of its content from colorful to relatively simple. This phenomenon is not only manifested in the relationship between Emperor Wu of the Han Dynasty and poetry, but also in the relationship between Emperor Wu of the Han Dynasty and other genres, as well as in the classical interpretation of poetry and Sao style. (If reproduced, please indicate.