|Called "blocking apparatus" this|
kind of training is not gennerally
seen in any Taekwondo book!
Taekwondo. You might have heard his name before; Choi Hong Hi. The book I am going to reccomend is not his 15 volume Encyclopedias allthough if you are a Chang Hon Ryu practisioner you should really really get that collection or at least the condensed Encyclopedia.