How to appreciate Cao Cao's short songs?

"Short songs" is an old topic in Han Yuefu, which belongs to "harmony and flat tone". This means that it was originally the name of a song. The original ancient characters have been lost. There are 24 songs of the same name in Yuefu, the earliest of which is Cao Cao's. How to sing this song, of course, is unknown now. However, in Yuefu's Harmony Tune, there are "long tunes" as well as "short tunes". Jason Wu's Interpretation of Ancient Poems in Yuefu in Tang Dynasty quoted the ancient poems Long song in Full swing, Ge Yanxing and Short Songs Can't Grow by Wei Wendi Cao Pi, Ge Yanxing and Ge Yanxing by Fu Xuan in Jin Dynasty, and The Governor came to Long song to continue short songs. Now we can only understand the musical characteristics of "short songs" according to this little material. Of course, this song "Short Song" originally had corresponding lyrics, that is, "Yuefu Ancient Ci", but this ancient ci has been lost. The earliest short line that can be seen now is Cao Cao's quasi-Yuefu short line. The so-called "quasi-Yuefu" is to make up new words with old Yuefu songs. There are two short songs written by Cao Cao, and here is the first one. The content and meaning of the poem are completely integrated into the rich lyrical artistic conception, and the whole poem gives full play to the specialty of poetry creation, accurately and skillfully uses metaphor, and achieves the goal of combining reason with emotion and touching. In the era of Cao Cao, he was able to achieve the expected social effect according to the special laws of lyric poetry, and this kind of creative experience is obviously worth learning. At the same time, because Cao Cao's emphasis on "meritocracy" at that time had certain progressive significance, his highly artistic performance on the theme of "seeking talents" should also be affirmed by history.