In their cultural notes in Sing Chinese
, Cindy Mao and Ma Baolin state that this is one of China's most popular nursery rhymes. It can be either recited or sung. It originates from a Chinese folk tale about a little rabbit whose mother goes out to fetch fruit. Whenever she comes back, she sings a song to announce her return. One day a wolf overheard the song and came to the little rabbit's house singing, but the little rabbit recognised the difference in the voice and refused to open the door.