They are dissatisfied with the style of "free poets" who ignored the art of poetry after the May 4th Movement, and advocate new metrical poetry, aesthetic principle of "rational emotional control" and formalization of poetry. In order to realize this theoretical principle, crescent poets have made useful attempts in the art of poetry: first, they have created objective lyric poems, that is, they have changed the lyric way of "expressing their feelings directly" into the objectification of subjective feelings. Then use imagination to pretend to be the outline of a vague image and turn subjective emotions into concrete images. This paper opposes the disorder and prosaic tendency of poetry, and makes a serious exploration of the metricalization of new poetry from theory to practice. Wen Yiduo put forward the famous thought of "three beauties" in the Metre of Poetry, namely, "the beauty of music (the beauty of syllables), the beauty of painting (the beauty of rhetoric) and the beauty of architecture (the symmetry of bars and the neatness of sentences). It was put forward in view of the scattered form of new poetry at that time. This proposition laid the theoretical foundation of the new metrical school and made some contributions to the development of new poetry. Therefore, the crescent school is also known as the "new metrical poetry school". The crescent school corrected the weakness of early poetry creation, and also made new poetry enter the period of independent creation.
later stage
In the later period, the Crescent School put forward the principles of "health" and "dignity", and still adhered to the position of "pure poetry" which was super-utilitarian, self-expression and aristocratic, emphasizing "purity in essence, thoroughness in technique and rigor in meter", but the artistic expression and lyric way of poetry approached the modernist school.
Sanmei
The beauty of music in the "three beauties" means that each section of the new moon poem is different, just like music. Musical beauty refers to the syllables of poetry, which are rhythmic and rhythmic and catchy to read. Architectural beauty refers to the symmetry of knots and the neatness of sentences. The beauty of painting refers to the rhetoric of poetry, paying attention to color and vivid image.