This is a vintage, rare video, hard to find. Excellent instructional content, produced for instructional purposes. Video quality is good and presentation of material is very good. 
 
Chin Na is an ancient combat system consisting of techiques using design of our musculo-skeletal system to immobilize, control or take down an agressor. It is very old and is believed to be one of the predecesors of the grappling styles such as Jiu Jitsu, Judo, and other derivatives such as Aikido/ Hapkido, Aikijutsu and more....

The Instructional footage s is organized into the following 9 progressive steps:
 
Training for Power and Speed
Escapes
Finger Chin Na