One of the expressive techniques of poetry is from things to heart.

The expression of this poem belongs to "Xing", one of the three major bills of "Fu, Bi and Xing" in the Book of Songs, that is, starting from things that seem to have nothing to do with the theme, it leads to the heart and expresses the mind. This poem is rich in vocabulary, such as the use of verbs such as "Liu", "Qiu", "Cai" and "You", as well as adjectives such as "graceful" and "uneven", which shows the poet's literary skill. The whole poem is catchy and the rhythm is harmonious and pleasing to the ear. Among them, there are two tones, overlapping rhyme and rich rhyme with the foot of the word "zhi" In addition, the rhyme of the first sentence which has the greatest influence on the later Seven Rhymes and Four-line Poems is the first work of China's ancient rhymes.