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Gert Corfitzen Jürgensen

Hi, I’m Gert Corfitzen Jürgensen

Martial Arts Researcher
Author and Blogger

Jissen Karate

Ryukyuan Caste System

Hierarchy in the Ryukyu Kingdom - A Complex Caste System. The Ryukyu Kingdom, a historical gem situated in the captivating landscapes of what is now Okinawa, Japan, was characterized by ...

New photograph of Itosu Ankō

Re-examination of the Itosu Ankō photo Only a few karate masters have had as much influence on karate development as Itosu Ankō (Itosu Yasutsune). He was born in Gibo Village ...

The history of the black belt

The history of martial arts belts, particularly the black belt and the introduction of colored belts, encompasses various stories and influences that have shaped the ranking system we know today ...