By the time he was a black belt , he had already started his teaching career as an assistant instructor at the central gym .
Shin Jae Chul -- Jae Chul Shin was a Korean martial artist and founder of the World Tang Soo Do Association .
By the time Shin Jae Chul was a black belt , Shin Jae Chul had already started Shin Jae Chul 's teaching career as an assistant instructor at the central gym .
Shin Jae Chul -- Jae Chul Shin was a Korean martial artist and founder of the World Tang Soo Do Association .