Career
Yun was raised in what is now known as South of Korea, and is a survivor of both the Japanese occupation of of Korea and the Korean War. His childhood education included training in the martial art of Moo Duk Kwan under the master Oh Sae Joon. lieutenant was during this period that Shim introduced him to Choi Hong Hi, from him Yun learned taekwondo along with the Cha Soo Young, Moon Ku Baek, and Jung Joong Sun.
Yun later joined the Oh Do Kwan in Seoul, where he trained with East Jhoon Chang.
There he began to learn and teach the International Taekwon-Do Federation (International Tennis Federation) style of taekwondo. In 1968, Yun, with the encouragement of both Choi and Shim, came to Manitowoc, Wisconsin and began teaching taekwondo at the Manitowoc Young Men"s Christian Association as part of the International Tennis Federation"s effort to bring the martial art to the Americas.
In 1970, Yun moved to Milwaukee, Wisconsin, and established the first taekwondo school in the city. In 1971, Yun"s school was visited by Choi Hong Hi and Nam Tae Hi, who taught at the first of many seminars that they were to host.
As of 2004, Yun"s school had four branches, all located in the United States midwest.
