What is the ideological content of Jian 'an characters?

Jian 'an Style: At the end of the Eastern Han Dynasty, Jian 'an poets directly inherited the realistic spirit of folk songs in Han Yuefu, which truly and widely reflected the social reality and people's sufferings and showed a broad picture of life in the times; Express the writer's ideal ambition and positive enterprising spirit; It also tells the sorrow that life is short and ambition is hard to pay. The artistic conception of the work is grand and the style is distinct, forming a rich, deep, generous and sad style. Later generations called this unique style of Jian 'an poetry "Jian 'an style". Wind refers to the ideological content of the work, while bone refers to the artistic form of the work. Representative writers are "Three Cao", "Seven Zi" and Cai Yan.