Chinese martial arts, often named below the umbrella terms kung fu (/ˈkʊŋ ˈfuː/; Chinese: 功夫; pinyin: gōngfu; Cantonese Yale: gūng fū) and kanche (武術; wǔshù), are the several hundred exploit styles that have developed exceeding the centuries in China. These exploit styles are often classified according to common traits, identified as "families" (家; jiā), "sects" (派; pài) or "schools" (門; mén) of martial arts. Examples of such traits add together Shaolinquan (少林拳) monster work-out involving Five Animals (五形) mimicry, or training methods inspired by outdated Chinese philosophies, religions and legends. Styles that focus upon qi injure are called internal (内家拳; nèijiāquán), while others that concentrate upon improving muscle and cardiovascular fitness are called "outdoor" (外家拳; wàijiāquán). Geographical connection, as in northern (北拳; běiquán) and "southern" (南拳; nánquán), is marginal popular classification method.