Hundreds of different styles of Chinese martial arts have developed over the past two thousand years, many distinctive styles with their own sets of techniques and ideas. There are themes common which allows them to be group according to generalized "families" "sects" "class" "schools” of martial art styles. There are styles that mimic movements from animals and others that gather inspiration from various Chinese philosophies or mythologies. Some styles put most of their focus into the belief of the harnessing of energy, while others concentrate solely on competition and exhibition. This rich variety of styles has created numerous classification schemes
Geographical location such as regional affiliation is one well known example. A particular Chinese martial arts style can be referred to as either a northern fist or a southern fist depending on its point of origin. Additional details such as province or city can further identify the particular style. Other classification schemes include the concept of external and internal. This criterion concerns the training focus of a particular style. Religious affiliation of the group that found the style can also be used as a classification. The three great religions of Taoism, Buddhism and Islam have associated martial arts styles. There are also many other criteria used to group Chinese martial arts; for example, imitative-styles and legendary styles, historical styles and family styles. Another more recent approach is to describe a style according to their combat focus.