Almost all the crickets can sing. But the great nature is so mysterious that there is such kind of cricket that cans sing. It is a kind of cricket without wings, a good friend of tree. It is called Carolina tortrix, a great worm that comes out to search for aphid at night and starts to build nest before dawn. It builds a new house every day and the new house is unusual with tree leave as the building material. It wraps the cut leaves on its body with its antenna sticking to its back, and then sews up the leaves with the thread made in its chest by its lower labial, and at last seals the openings. It sleeps during daytime. The little black bean in the story is that kind of cricket that cans sing and this book is to make children understand that though ability to sing is wonderful, there are still something more important than singing through the experience of the little black bean. - from Amzon