I notice a lot of people on this board seem to practice Zheng Man Qing (Cheng Man Ch'ing) Yang Taiji. I've read widely varying opinions about Zheng Man Qing ranging from high praise for his great innovations or damning criticism that he added to the downfall of Yang style as a style respected for its combat-effectiveness. Since I've never done Yang style, I wouldn't know either way. Can anyone who knows the difference explain to me how Zheng changed the Yang Cheng Fu form? What do you think the purpose behind his changes was? Improved health? Improved martial effectiveness? Do you think his contribution was beneficial or harmful to Yang Taiji as a martial art? Can anyone here who has done both describe how they compare? I'm not trying to start a faction war--just interested in hearing your opinions/experiences.