Cifu is the earliest rhyme of several words.

Cifu began with four rhymes. The earliest poetic styles are four-character poems and ci fu, which is an ancient style and originated in the Warring States period. The Fu written by Qu Yuan and others in Han Dynasty is called Chu Ci, and later generations generally call Fu-style literature Ci Fu. Cifu flourished in the Han Dynasty, so it was called Hanfu in the world. Ci is the name of style, Jude's theory is another name of language, and qualitative remarks are less literary.