Yang family-style () T‘ai-Chi Ch‘üan (Taijiquan) in its many variations is the most popular and widely practised style in the world today and the second in terms of seniority among the primary five family styles of T'ai Chi Ch'uan. History The Yang family first became involved in the study of t'ai chi ch'uan (taijiquan) in the early 19th century. The founder of the Yang-style was Yang Luchan (楊露禪), aka Yang Fu-k'ui (楊福魁, 1799–1872), who studied under Ch'en Chang-hsing (1771–1853) starting in 1820. Yang became a teacher in his own right, and his subsequent expression of t'ai chi ch'uan became known as the Yang-style, and directly led to the development of other three major styles of t'ai chi ch'uan (see below). Yang Luchan (and some would say the art of t'ai chi ch'uan, in general) came to prominence as a result of his being hired by the Chinese Imperial family to teach t'ai chi ch'uan to the elite Palace Battalion of the Imperial Guards in 1850, a position he held until his death. Yang Luchan passed on his art to: his second son, the oldest son to live to maturity, Yang Pan-hou (楊班侯, 1837–1890), who was also retained as a martial arts instructor by the Chinese Imperial family. Yang Pan-hou became the formal teacher of Wu Ch'uan-yu (Wu Quanyou), a Manchu Banner cavalry officer of the Palace Battalion, even though Yang Luchan was Wu Ch'uan-yu's first t'ai chi ch'uan teacher. Wu Ch'uan-yu became Yang Pan-hou's first disciple. Wu Ch'uan-yu's son, Wu Chien-ch'üan (Wu Jianquan), also a Banner officer, became known as the co-founder (along with his father) of the Wu-style. his third son Yang Chien-hou (Jianhou) (1839–1917), who passed it to his sons, Yang Shao-hou (楊少侯, 1862–1930) and Yang Chengfu (楊澄甫, 1883–1936) and Niu Chunming (1881–1961). Wu Yu-hsiang (Wu Yuxiang, 武禹襄, 1813–1880), who also developed his own Wu/Hao-style, which eventually, after three generations, led to the development of Sun-style t'ai chi ch'uan by Sun Lutang. Yang Jianhou the third son Yang Chien-hou (Jianhou) (1839–1917) passed on the middle frame long form, sometimes called the 2nd generation Yang form or the Yang Jian hou form to his disciples who still pass on this more martial form that is when seen more reminiscent of Chen style for which it is closer to in time as well as form than the Yang Cheng fu form or 3rd generation styles.6 Yang Chengfu removed the vigorous