2. Cao Pi, the actual leader of Ye Group, played a key role in the spiritual structure of Jian 'an literature, and the resulting "Jian 'an style" had a far-reaching impact on later literature: Cao Pi ordered Liu Shao, Wang Xiang and others to compile the first kind of books in China, which was the first time for official institutions to compile such books; Dian Lun Wen initiated the atmosphere of literary criticism and was the originator of China's literary criticism. Ge Yanxing is the first complete seven-character poem in the history of China literature, which has a great influence on the creation of seven-character poems in later generations.
3. Cao Zhi's poems not only embody the elegance of The Book of Songs, but also contain the profundity and wonder of The Songs of the South. It not only inherits the realistic brushwork of the Han Yuefu, but also retains the sentimental sentiment of nineteen ancient poems. Cao Zhi's poetry has its own distinctive and unique style, which has completed the transformation from Yuefu folk songs to literati poems.