Although this is a famous historical story, it is not difficult to write a poem of this level in seven steps according to the level of ancient literati at that time. So don't use this poem to measure Cao Zhi's literary level.

Classification of poetic styles

According to genre, there are classical poems (including Yuefu songs) and modern poems (or modern poems). The poems produced by the previous generation in the Tang Dynasty are called ancient poems, and the new poems produced in the Tang Dynasty are called modern poems. According to the number of words in each sentence (one word is one word), there are five words, seven words and miscellaneous words. Combining the number of words and genre, there are five-character archaism and seven-character archaism; Five-character parent, seven-character parent. Modern poetry includes two kinds: regular poems and quatrains, namely five-character regular poems and seven-character regular poems; Five-character quatrains, seven-character quatrains. Regular poems are generally eight sentences, and quatrains are four.

For example, Wei Caozhi's seven-step poem is an ancient poem with five words and six sentences.

Boil beans and burn beans, and simmer black beans.

Soak in the kettle, and the beans cry in the kettle.

We were born from the same root, so why should we speculate with each other!

For example, Tang-Meng Haoran's "Spring Dawn" belongs to a five-character modern poem with five-character quatrains.

Sleeping sickness in spring unconsciously broke the morning, and the chirping of birds disturbed my sleep.

But now I remember that night, that storm, I wonder how many flowers were broken?

For example, Tang-Wang Changling's "Join the Army" is a seven-character modern poem with seven quatrains.

There is a dark snow-capped mountain in Qinghai, with long white clouds and a lonely city looking at Yumenguan.

Yellow sand wears golden armor in hundreds of battles, but the loulan is not returned.

For example, Delighting in Rain on a Spring Night written by Tang Du Fu is a five-character poem.

Good rain knows the season, when spring comes.

Sneak into the night with the wind, moisten things silently.

The wild path is dark, and the river is bright.

Look at the red and wet place, the flowers in Jinguancheng are heavy.

For example, The Imperial Army Recovers the Banks of the Yellow River written by Du Fu in Tang Dynasty is a seven-character poem.

The news of this distant western station! The north has been recovered! At first, I couldn't stop crying on my coat.

Where are my wife and son? There is not a trace of sadness on their faces. However, I packed my books and poems crazily.

On a green spring day, I began to go home, singing my songs loudly and drinking my wine.

Come back from this mountain, pass another mountain, go up from the south and then go north-to my own town! .

This is a more detailed classification for reference.