It is said that Su Dongpo once wrote a poem with four words, but it can be read into 28 words. The poem reads: "Go back to Ma Rufei to enjoy flowers. It was dusk when I woke up. " Read: "Go to Ma Rufei to enjoy flowers, and go to Ma Rufei to have a light drink. When the wine wakes up slightly, it is already dusk, and when I wake up, I have enjoyed the flowers. " Stylistically speaking, this poem can be called "seven-character first class" and "overlapping rhyme rotation", and the sentence patterns can be read as four or three as usual: Shang Huashi and Ma Rufei are slightly awake, which is dusk, or they can be divided into three or four types in advance, so that the words can be used repeatedly: Shang Huashi and Ma Rufei are slightly awake, which is dusk.
There are three or four styles in lyrics and songs, such as Liu Guo's Erlang Shen and I'm going to visit/ride Shan Weng, which are three or four styles.