In ancient China, unhappy people were called poems and happy people were called songs. In modern times, they are collectively called poetry.
Ci: body name, a verse form of poetry, developed from five-character poems, seven-character poems or folk songs.
It began in the Tang Dynasty and flourished in the Song Dynasty. Originally, it was a poetic style sung by music, and the length of sentences varied with the tune.
So it is also called long and short sentences. There are two kinds of poems and slow words, which are generally divided into upper and lower parts.