Style was first used to judge characters. Some people think that style is style, while others think that style is the relationship between form, language, content and thought. In the comments, "the wind is clear and the bones are upright" means "the beauty of rich literature and emotion, compact structure, rich and smooth", which is the Wei and Jin demeanor enjoyed by later generations.
Since ancient times, there has been a saying that poetry expresses ambition. The so-called "ambition" should refer to the author's ambition (Zhu Ziqing's comment on poetry), which is also a personality proposition. In the social practice of later generations, the connotation of "ambition" gradually began to include the moral connotation of Confucianism, while the meaning of individuality became less and less.
At the beginning of the western Han dynasty, five words were not full, and they stopped at the folk. Scholars regard them as folk ballads and pay little attention to them. Lagging behind Yuefu, this is gradually absorbed. Because of this, Yuefu poems contain many folk songs. His poems are innocent and clean, and have not yet been carved. The writing style is natural and simple, retaining a large number of folk languages. This had a great influence on later poems.
Wei and Jin poetry inherited the legacy of Yuefu, but it was innovative. First of all, the literati style of Yuefu changed Wuyan from a folk song to a literati poem. On the other hand, literati poetry absorbed the essence of folk songs and began to get rid of the glitz of Han Fu, forming a natural and flamboyant style. The achievements in this field are very high and representative, with "Three Cao Fathers and Sons" as the most detailed. There are many other articles about "Three Caos", so I won't say much here. I just want to make one thing clear. Cao Shi and his son are different from other Jian 'an literati. "Three Cao" is a poet, but also the protagonist of social and political life. This obvious protagonist consciousness is incomparable to others. It is this sense of protagonist that enables them to say what others can't say and think what others can't think. Cao Cao's frankness permeates the atmosphere from the inside out. His "sadness" and "ancient straightness" (tolerance) are not sighs of the short life of ordinary literati, but contain profound political vision (such as Hao and short songs). Moreover, the ranger in Cao Zhi's "White Horse" is also very different from the ordinary scribes, without the burden of loyalty to the monarch, and "the thoughts and feelings are lofty and extraordinary" (see the Dictionary of Poetry Appreciation in Han, Wei and Six Dynasties). And all this is a profound expression of the protagonist's consciousness. In their view, they are not only commenting on history, but also creating history by themselves.
As for Zhengshi literature, it obviously has the characteristics of literary popularization, but it is in the same strain as Jian 'an in terms of expressing personality. When you enter the gold, you gradually lose your bright and vigorous character.