Song, originally a form of ancient songs, later became a genre of ancient poetry. Its syllables and meter are generally free, and its form adopts the ancient style of five words, seven words and miscellaneous words, which is full of changes.
Rhyme is a kind of rhyming prose, a branch of rhyming prose, and a close relative of parallel prose. It mainly uses rhyming rhythm to write prose, and even most of them use words with the same vowels as sentence endings in order to rhyme with stylistic prose or new prose. It is divided into traditional ci-fu, vernacular ci-fu, new ci-fu, poetry ci-fu, ci-fu and so on.