Du's poems are called "history of poetry", which actually means that Du's poems have the general cognitive value of history books.
1. Inheriting the Han Dynasty Yuefu tradition of "feeling sorrow and joy, and writing about events", he wrote a large number of large articles that were inspired by major "current events" and directly reflected major social and political contents. Read this kind of article In the poem, we seem to be watching the historical picture of the great changes in the prosperous Tang Dynasty. We have entered the tunnel of history, and we are shocked and exclaimed by it.
(1) In general, he describes the great destruction and disaster caused by the war. He does not generally describe his personal experiences, feelings, and worries during the war, but extends his writing to the entire world. All strata of society, especially the lower class, reflect the social suffering suffered by the people at the bottom. This is where the value and significance of the three officials, three farewells, and two sorrows lie. At the same time, the poet describes the suffering of the people at the bottom, not simply out of sympathy, but to deal with it in the context of a grand social disaster. The "two sorrows" are mourning for the royal family and the royal family, but they belong to the same society. The bearers of difficulties are all the poet's sympathy. The poet not only sympathized, he also fervently called for an early end to the war. To this end, he encouraged the whole country to actively participate in the counter-insurgency war.
(2) Du Shi’s description of social suffering does not stop at generalized events or rough outlines, but concretely displays broad yet detailed vivid scenes. "Sorrowful Chen Tao".
(3) The authenticity of details. When recalling his escape, he could not forget his wife and children who suffered at the same time as him. There are very specific and vivid details in "The Northern Expedition" and "Peng Yaxing". It's heart-wrenching to read.