2. Du Fu's poems are plain, popular and realistic, but they are extremely skillful. He also often uses monologues and proverbs to highlight the characters' personalities.
3. Du Fu's poems are especially good at grasping details when depicting characters, such as a passage describing his wife and children in the Northern Expedition.
4. Du Fu's poetic style is changeable, but generally speaking, 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.