essence of boxing) He also wrote a study of Bagua spear, though this was never published. References External links Sun-style website Sun-style researched Sun-style Forum Sun's Tai Chi Research Institute - seccion sudamerica (Wayback Machine copy) 1860 births 1933 deaths Chinese baguazhang practitioners Chinese tai chi practitioners Chinese xingyiquan practitioners Martial arts school founders Sportspeople from Baoding Martial arts writers