Wu Yuxiang or Wu Yu-hsiang (1812–1880) was a Chinese t'ai chi ch'uan (taijiquan) teacher and government official active during the late Qing dynasty. Wu was a scholar from a wealthy and influential family who became a senior student (along with his two older brothers  Wu Chengqing 武澄清 and Wu Ruqing 武汝清) of Yang Luchan. Wu also studied for a brief time with a teacher from the  Chen family, Chen Qingping, to whom he was introduced by Yang. 
There is a relatively large
body of writing attributed to Wu on the subject of t'ai chi ch'uan theory, writings that are considered influential by many other schools not directly associated with his style.  
His most famous student was his nephew,
Li I-yu (李亦畬, 1832–1892), who also authored several important works on t'ai chi ch'uan. Li I-yu had a younger brother who was also credited as an author of at least one work on the subject of t'ai chi, Li Ch'i-hsuan.  
The style of t'ai chi ch'uan that Wu taught was eventually known, because of its later transmission by three generations of students of his nephew named
Hao, as Wu (Hao)-style t'ai chi ch'uan. Hao Wei-chen subsequently taught Sun Lu-t'ang, the founder of Sun-style t'ai chi ch'uan. 
T'ai chi ch'uan lineage tree with Wu (Hao)-style focus [ edit ]
Family of Wu (Hao)-style t'ai chi ch'uan lineage tree
This lineage tree is not comprehensive, but depicts those considered the 'gate-keepers' & most recognised individuals in each generation of Wu (Hao)-style.
Although many styles were passed down to respective descendants of the same family, the lineage focused on is that of the Wu (Hao) style & not necessarily that of the family.'
References [ edit ]
^ a b c d e Wile, Douglas (1995). Lost T'ai-chi Classics from the Late Ch'ing Dynasty (Chinese Philosophy and Culture). State University of New York Press. ISBN 978-0-7914-2654-8.
^ a b c Yip, Y. L. (Autumn 1998). "A Perspective on the Development of Taijiquan – Qi, The Journal of Traditional Eastern Health and Fitness Vol. 8 No. 3". Insight Graphics Publishers. ISSN 1056-4004.