It means that Jian 'an poets inherited the Book of Songs and the excellent realistic creation tradition of Han Yuefu. On the one hand, they truly described the great turmoil and division in the late Han Dynasty in their poems, showing their concern for people's livelihood. At the same time, he expressed his ambition to make great achievements in the world in his poems.
The emotional tone of poetry is generous and sad, and the language is concise and vigorous, natural, clear and fluent, which has become a model of later poetry.