2. Cao Cao's poems are greatly influenced by Yuefu, and all the existing poems are Yuefu songs. Although these poems follow the old theme of Yuefu, not the poems of the ancients, and find another way, they are not bound, but they inherit the spirit of "feeling worried and happy, starting from things". For example, Lu Luxing and Good Li Xing were originally elegies, but Cao Cao used them to mourn the troubled times. "Out of the East Gate" was originally a song lamenting the impermanence of life and the need to eat, drink and be merry in time, but Cao Cao used it to express his ambition to dominate the world and the magnificent scenery he saw when he returned from the Northern Expedition. It can be seen that Cao Cao's innovative folk songs opened up a new style of Jian 'an literature and influenced Du Fu, Bai Juyi and others later.
3. There are three contents in Cao Cao's poems: reflecting the reality of the turmoil in the late Han Dynasty, unifying the ideal of the world and the indomitable spirit, and expressing unforgettable negative emotions.
4. Cao Cao's poems are simple, straightforward, bold, sad, gloomy and vigorous. The colorful words are rare, but vivid as the poem "Watching the Sea": "The autumn wind is bleak, the waves are rough, and the trip to the sun and the moon, if it is outside, the stars and the Han are brilliant, if it is outside." A few strokes can show the poet's mind with a vast seascape without retouching.
Excerpted from Baidu Encyclopedia, simple editing, for reference only.