1, average: average, average. Flat and light, flat and light. Plain, plain, plain. Flat and light, flat and light.
2. Flat top and flat bottom type: flat top and flat bottom, flat top and flat bottom. Flat and light, flat and light. Plain, plain, plain. Flat and light, flat and light.
3. Flat top and flat bottom type: flat top and flat bottom, flat top and flat bottom. Plain, plain, plain. Flat and light, flat and light. Plain, plain, plain.
4. Opening and closing: flat and flat, flat and flat. Plain, plain, plain. Flat and light, flat and light. Plain, plain, plain.
Genre evolution
In the early Tang Dynasty, the seven-character quatrains were not only few in number and narrow in subject matter, but also had little influence on the poetry circle and were not mature enough in art. Not only was the rhythm not completely coordinated, but the style was relatively sluggish (such as the first half of an antithetical poem) and lacked long rhyme. Famous poets in the early Tang Dynasty, such as Shen Quanqi and Song, wrote good metrical poems, but the level of seven-character metrical poems was average.
In the prosperous Tang Dynasty, a large number of poets with four wonders emerged, and they made great progress in art, which can keep pace with the five wonders. Li Bai, Wang Changling, Wang Zhihuan, Wang Wei, Jia Zhi, Gao Shi, Cen Can and Chang Jian. It was really a group of four-line experts in the poetry circle at that time. Li Bai and Wang Changling are two people who represent the highest achievements of the Four Wonders.
In the middle Tang Dynasty, there were many poets who were good at the Four Musts, such as Li Yi and Liu Yuxi, but their basic methods did not break through their predecessors. In the late Tang Dynasty, the Seven Wonders had a new development in the hands of Du Mu, Li Shangyin and Wen.