Tai chi chuan (traitional Chinese: 太極拳; simplified Chinese: 太极拳; pinyin: tàijíquán; Wade-Giles: t'ai4 chi2 ch'üan2) is classified as Wudangquan or an internal Chinese martial art. Tai chi is typically practised for a variety of reasons: its soft martial techniques, demonstration competitions, health and longevity. Consequently, there exist a multitude of training forms, both traditional and modern, which correspond to those aims. Some of Tai chi chuan's training forms are well known to Westerners as the slow motion routines that groups of people practice together every morning in parks around the world, particularly in China.