Boomerang can fly out and then fly back. Its shapes include "V" shape, banana shape, bell shape, three leaf shape, "ten" shape, multi leaf shape, and other shapes. Many people have seen acrobats flying boomerangs out on TV and circling around the top of the audience. They flew back into the hands of the performers and won full applause. (in fact, you can do it with more practice)
The V-shaped and banana shaped boomerang was once the traditional hunting tool of the aborigines in Australia. After a skilled Hunter sends a boomerang to the prey, if he fails to hit the target, the boomerang will magically return to the sender's hand. Nowadays, boomerang has become the favorite of Australians. People regard it as toys and sports equipment to carry out throwing competitions. This sport has been popular in Europe and America. The world flying boomerang championship is regularly held in Kiel, a town in northern Germany.