Yang Chengfu
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 "fā jìn" (發勁 release of power) from the Hand (solo) Form, as well as the energetic jumping, stamping, and other abrupt movements in order to emphasise the "Da jia" (大架 "large frame style"), but retained them in the Weapons (sword, saber, staff, and spear) forms. The Hand Form has slow, steady, expansive and soft movements suitable for general practitioners. Thus, Yang Chengfu is largely responsible for standardizing and popularizing the Yang-style t'ai chi ch'uan widely practised today.