Cao Cao was an outstanding writer in the late Han Dynasty and a pioneer in creating a new situation in Jian 'an literature. By reading Cao Gong's poems, we can find that they contain rich ideological connotations. On the whole, his poems reflect the lofty spirit of caring for people's livelihood and sufferings, the grandeur of politicians, the ambition of seeking talents and unifying the world, enthusiastically eulogizing outstanding figures in history and expressing generosity and sadness.

Briefly describe the ideological content and creative achievements of Cao Cao's poems.

1. A great achievement of Cao Cao's poetry creation is to create a prosperous situation of literati's "quasi-Yuefu" poetry creation. Write new things with ancient inscriptions, such as Autumn Record and Haoli. The old poems of Yuefu are elegies, but Cao Cao used a sad tone.

2. The unique artistic style with heavy sadness. His poems can especially express his personality, with the great boldness of vision of a political leader, simple and lyrical nature, showing his great ambition, firm confidence, outstanding perseverance and majestic momentum, and his elegy is generous and full of charm. For example, "Short Song" is lofty and broad, with the bearing of commanding the world and rock-solid confidence and will, which can inspire readers' positive and enterprising spirit.