Umbrella bones refer to the bones that support umbrellas. In the past, umbrella ribs were mostly made of wood and bamboo. Later, there were iron bones, steel bones, aluminum alloy bones (also known as fiber bones), electric bones and resin bones, and most of them used contraction bones (contraction umbrellas), which were light and easy to carry. 1874, Hawkes, a metal wiredrawing worker in Dika area near Xueer, obtained the patent right of arc steel umbrella rib.