|Born||May 18, 1920
|Died||April 3, 1983 (Aged 63)
|Style||Taekwondo, Chuan Fa, Shudokan Karate|
|Revised Romanization||Yun Byeongin|
Yoon Byung-in (May 18, 1920 – April 3, 1983), also known in English reference as Byung-in Yoon, was a Korean Grandmaster of martial arts. He is believed to be the first Korean national to study Chuan Fa (Chinese Gung Fu) in China and to return to teach it in Korea. He was an influential instructor to many current and past Masters and Grandmasters, and himself a master of many styles and studies of Martial Arts.
Yoon Byung-in was born on May 18, 1920 in Mu-sun, Bong-Chon, Manchhuria.
The parents of Yoon Byung-in suffered under the Japanese occupation of Korea and fled to Manchuria. After diligent efforts to impress a Mongolian Chuan-fa master, the child Byung-In was permitted to study Chuan Fa or Gung Fu.
Yoon studied Chinese Chuan Fa under the guidance of a Mongolian instructor in Manchuria. Later, Yoon trained Karate at the Nihon university karate club in Japan with Kanken Tōyama. He was not initially engaged in karate training at the university, but was often seen practicing conditioning exercises against a courtyard tree. This tree reportedly started leaning from his practice. Japanese karate students pursued a Korean karate student that skipped karate class to spend time with his sweetheart. After being persuaded by the beat-up student to help, Yoon Byung-in sprung into action using Chuan Fa. He skillfully deflected and evaded the karate students’ strikes and kicks to the point that they gave up and ran back to tell their teacher about what happened. Teacher Kanken Tōyama invited Yoon Byung-in to tell him about the skillful non-karate martial art he used against his students. Yoon Byung-in explained to Toyama about his Chuan-fa education in Manchuria. Toyama appreciated the Chuan-fa background since he (Toyama) had studied Chuan-fa in Taiwan for 7 years, previously. They decided to exchange knowledge; Yoon Byung-in would teach Toyama Kanken Chuan Fa and Toyama Kanken would teach Yoon Byung-in his Shudokan Ryu Karate. Yoon later created his art and called it Kwon Bop Kong Soo Do. Unlike other taekwondo kwan (schools), early Chang Moo Kwan was mainly based on Chinese Chuan-fa (Chuan Fa) and Shudokan karate. The early Chang Moo Kwan taught the forms, Dan Kwon (short fist), Chang Kwon (Long Fist), Tai Jo Kwon (Fist of the Founding King), Pal Gi Kwon (Eighth Manchurian Cavalry), and Doju San (Escaping Mist). In addition, they practiced a staff form developed by Yoon Byung-in and a staf form developed by Yoon Byung-in's friend and Ji-do Kwan founder, "Yoon Ui-Byung (Yoon Kwe-byung)."
From 1951 to 1966, the whereabouts and activities of Yoon Byung-in are unknown, as he traveled to North Korea in August 1950 with his older brother, Yoon Byung-du, a Captain in the North Korean Army.
In 1966 and 1967, he taught Gyuck Sul "special combat strategy" to special forces of the Moran Bong. In late 1967, Master Yoon completed his assignment and returned to his supervisor position at a concrete factory in Cheong-Jin City, where he worked until his death from lung cancer in April 1983.
Yoon, Byung-in (kneeling, center) with students during special weekend training session (ca. 1947).