The ranks in the Chinese People's Liberation Army Air Force are similar to those of the Chinese Army, formally known as the People's Liberation Army Ground Force, except that those of the PLA Air Force are prefixed by 空军 (Kong Jun) meaning Air Force. See Ranks of the People's Liberation Army or the article on an individual rank for details on the evolution of rank and insignia in the PLAAF. This article primarily covers the existing ranks and insignia.