In Shu, Du Fu lived in Chengdu and was implicated in the "Anshi Rebellion". In his early years, his political ideal of "loyalty to the monarch and honest customs" was completely shattered. He saw that the mountains and rivers were broken, the country was in turmoil, the people were living in dire straits, but there was nothing he could do, and there was nowhere to vent his inner anguish, so he sang praises to Kong Minglai to show his "hero", that is, his sincere heart of serving the country.
The whole poem was written by the "Prime Minister's Temple", but it was written from the standpoint of self. Combined with Du Fu's absolute loyalty character of being loyal to the monarch all his life, explaining to the powerful and never disobeying, how can Zhuge Liang understand the heavy sorrow of unfulfilled ambition and lost years?
But Treatise on Febrile Diseases changed the gloomy atmosphere in Du Fu's Shu Xiang. Whether recalling his ambition when he was young or praising today's masterpieces, Lu You created a magnificent atmosphere. Of course, this grandeur is in sharp contrast with the poet's own life experience. The passage of time, not only makes the young ideal far away, but also pushes himself to a darker corner and is not appreciated.
"Patriotism" runs through Lu You's life, and his mood is more like the ups and downs of the Song Dynasty. When Lu You wrote Treatise on Febrile Diseases, it was already 6 1, which can be said to be a "twilight man". However, he never gave up his political opinion of resisting gold. He fought for the country all his life, repelled the savage army and restored the prestige of the country. Even if what he did touched the interests of the capitulators, he was not afraid, but boldly criticized the serious bad phenomenon of the villain in power and denounced the sad situation that the country was in danger and the people turned a blind eye in disappointment and grief.
The above is a brief analysis of the writing background and emotional expression of the two poems, and another obvious feature lies in the choice of images.
The images representing spring in Shuxiang, such as green grass, spring colors and orioles, have many colors, which are in contrast with the author's heavy and dark mind in a way of color rendering, showing more loneliness and sadness. The book of wrath uses magnificent images such as "a building, an iron horse and an autumn wind", revealing the author's love for the country and the nation in the past ups and downs of the kingdom.
The style of poetry itself is related to what the poet experienced, but more often, behind a poem is a period of historical time, which sent away all the fragments of yesterday, cleared up the layers of dust under the Millennium, and left a thrilling era.