Martiality, which is hard to describe orally or in writing, has limitations in explaining the arts by books or photos. It is most desirable to learn from both teacher's instruction and one's own repeated practices in person. There are theoretical contents of Geohapgumdo in writing in reference to 'A Manual for Geohapgumdo'(Do, Ho-il, Munchangsa, 1994) and principal movements in photos and moving pictures. For other techniques, please ask a question of Geohapgumdo training hall near to the Association.