孙式：清末河北完县人孙禄堂（1860～1933），精通形意、八卦，民国初向郝为真学太极拳，博采各家之长，融会贯通，独创孙式太极拳。其特点是：进退相随，动作舒展圆活、敏捷自然，转变方向时多以开合相接，故又称为“开合活步太极拳”。
Sun-style：Sun Lutang(1860～1933)，from Wan County，Hebei in late Qing Dynasty，was proficient in Xingyi Quan and Bagua，who had learned Taiji Quan from Hao Weizhen at the beginning of the Republic of China.He had collected the advantages from all schools and digested to originally create Sun-style Taiji Quan.The characteristics are：linked forwards and back-wards stepping，extending，swift and natural movements，and direction changes with opening and closing movements.It is also called the“ Opening and closing flexible Step Taiji Quan”.