In traditional Chinese children's songs, there is a form of song in which the first and last lines of a song are connected to each other What is it?

It is a chain tune. According to the query related public information, the traditional children's song form of song line after song line is a kind of traditional children's song form using special rhetoric, structure, rhyme techniques to build a poetic style, called the chain tune. Chain tunes, also known as the chain of pearls, chained, linked sentences, articulated, is a use of special rhetorical, structural, rhyming techniques to build a poetic style of traditional children's song form.