Yang Chengfu
Beginning in 1914, Sun Lutang together with Yang Shao-hou, Yang Chengfu and Wu Chien-ch'uan taught t'ai chi to the public at the Beijing Physical Education Research Institute. Sun taught there until 1928, a seminal period in the development of modern Yang, Wu and Sun-style tai ji quan. Sun Lutang from 1915 also published martial arts texts.