Interesting set of internal exercises.
Does anyone know of this Sifu?
http://www.youtube.com/watch?v=RgsKYLfabv4
http://www.youtube.com/watch?v=yqgT4pKV ... re=related
http://www.youtube.com/watch?v=gYLHoaBz ... re=related
http://www.youtube.com/watch?v=_vUWPPUJ ... re=related