 After 1912 he continuously developed the teaching t'ai chi ch'uan at the Beijing Sport Research Society, gradually refining his father’s style.His two sons, Wu Kung-i and Wu Kung-tsao, were his first students.Wu Chien-ch'uan’s eldest daughter, Ma Jiangbao's mother Wu Yinghua (1907–1996), started studying t'ai chi ch'uan with her father at a very young age.