Pre-crescent theory
Wen Yiduo put forward the famous thought of "three beauties" in his poetic meter, namely, "the beauty of music (the beauty of syllables), the beauty of painting (the beauty of words) and the beauty of architecture (the symmetry of sections 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.
Late theory
In the later period, the Crescent School put forward the principles of "health" and "dignity", adhered to the position of "pure poetry" which was super-utilitarian, self-expression and aristocratic, and emphasized "purity of essence, thoroughness of technique and rigor of meter". However, the artistic expression and lyricism of poetry are close to modernist schools.
Sanmei
The beauty of music in the "three beauties" means that each section of the new moon poem is different, just like music. Architectural beauty means that the format of poetry is like architecture. The beauty of painting is that every paragraph of the crescent poem is a plot that can be drawn.