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Gert Corfitzen Jürgensen

Hi, I’m Gert Corfitzen Jürgensen

Martial Arts Researcher
Author and Blogger

Jissen Karate

Shurijo Castle, Ryukyuan History and Cultural Heritage

Shurijo Castle, located in Naha, the capital city of Okinawa Prefecture, Japan, stands as a testament to the rich history and cultural legacy of the Ryukyu Kingdom. Over its existence ...

The 36 Clans of the Min-People

The families from Min, known as the 36 families from Min (閩人三十六姓), were sent to the Ryukyu Islands (modern-day Okinawa) under the orders of the Ming Chinese Emperor. These families ...

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 ...