How to detect the seven wonders of ancient times

Seven-character quatrain detection method, seven-character quatrain has a fixed rhyme, if it meets the following rhythm, it can be judged as ancient seven-character quatrain.

Pingping Pingping Pingping Pingping Pingping Pingping Pingping Pingping Pingping Pingping Pingping Pingping Pingping Pingping. Plain, plain, plain.

Four-character poetry is a kind of traditional poetry of Han nationality and belongs to the category of modern poetry. This poem has four sentences and seven words, each sentence has strict metrical requirements and rhymes. It originated from Yuefu folk songs in the Southern Dynasty or Yuefu folk songs in the Northern Dynasty or the Western Jin Dynasty, and matured in the Tang Dynasty. Representative works include Wang Changling's Two Farewells to Furong Inn and Xin Qiji, Li Bai's The First Generation of Baidicheng, Du Fu's Downstream Meeting Li Guinian, and Li Shengjiao's Feeling of Watching the Tide.