Du Fu is an angry youth on the whole, with a high literary accomplishment. He is interested in the world, but he can't be an official. In fact, in some respects, just like Li Bai, the heart is higher than the sky, only wider than the sea, and the emotional intelligence is zero. He dared to write "Two Ways" when Yang Guifei was in her prime before the Anshi Rebellion, to write "Three Officials and Three Farewells" when she fled, to stand out for one room, to lose face in the war and go to Tang Suzong, and to die for her official position. So I didn't succeed in my life, but? Poets should beware of prosperity? The more bumpy the fate of life, the better the articles and poems are written. This is the same as Li Bai. Everyone knows enough about Du Fu's life and poems. He cares about the country and the people, writes poems into history, strictly abides by statutes, and is a master in poetry. Let's look at his greatest achievement in the history of poetry.
Du Fu was born at this time, and wrote a set of quatrains: "Drama is six quatrains", which ended the dispute of poetry theory in the early Tang Dynasty from the perspective of poetry criticism. This is much more significant than Han Yu's later ending the dispute between Li and Du. These six quatrains are not mentioned in this answer. Please search and read by yourself. As literary criticism, these poems severely criticized the poetic style of Liang, affirmed the respective development of ancient poetry and modern poetry, and made clear the future direction of poetry. As soon as e-day came out, there was no competition. Du Fu's thoughts and viewpoints are irrefutable, which ended the dispute of poetry theory in the early Tang Dynasty. Moreover, Du Fu insisted on writing poems with these ideas. Du Fu's poems became a history of poetry because he always paid attention to and wrote about the times. He wrote the history of the Tang Dynasty from prosperity to decline. The value and task of literature are embodied in Du Fu's literary works, and only he is truly worthy of the word "worrying about the country and the people". Call it? Poet saint? , deserved it.