Mainly the size will be different, because children's hands are different in size, so the choice of Allegro is different.

Allegro is a traditional rap art, which belongs to the rhyming genre of China Quyi. In the early years, it was called "Jilaibao", also known as "Dingdang", "Liukou" and "Lianhualuo", which was sung by the poor in the Song Dynasty.