After studying political science at Kyungpook National University, he attended the Infantry Officer Candidate School in the Republic of Korea Army (ROKA) and graduated as a Second Lieutenant.

[3][4][5] Leaving his military career, Hwang was invited to the US and first taught a credited course at Manchester Community Technical College in 1971.

[5] In 1974, Hwang graduated from the first International Taekwon-Do Federation (ITF) Instructors Course and Umpires Course hosted and taught by General Choi Hong-hi in Montreal, Quebec, Canada.

[9] He subsequently started taking private lessons from General Choi in the 1980s after being promoted to seventh degree Master in Taekwon-Do.

Team at the 8th ITF World Championships in Pyongyang at North Korea's Taekwon-Do Palace.