Du Fu's poems are simple, popular and realistic, but they are very skillful. He also often uses monologues and proverbs to highlight the characters' personalities.
Du Fu's poems are especially good at describing details when depicting characters, such as a passage describing his wife and children in the Northern Expedition.
Du Fu's poetic style is changeable, but on the whole it can be summarized as depression and frustration. The cadence here refers to the deep meaning of the article, while the cadence refers to the ups and downs of feelings, tone and syllables.
All these have established Du Fu's supreme position as a "poet saint" in China's literary history of more than 3,000 years.