1 and "depressed and frustrated" comments are exactly the projection of suffering and bitterness in Du Fu's poems. From the external environment, Du Fu was born at an inopportune time, and China is slipping from the historical climax to the trough. Fortunately, the unfortunate poet of this country was displaced in troubled times, which made Du Fu suffer a lot, but he gave a poet in the history of China literature.
2. Du Fu's poems closely combine social reality with the author's daily life, achieving the perfect unity of ideology and artistry, and also representing the highest achievement of poetry in the Tang Dynasty, so Du Fu's poems are called "epics" at present.