The belt color and any insignia thereon indicate the student's rank. Archeological findings during these times such as the mural paintings on the royal tombs during the Koguryo period, stone sculptures at pagodas during the Silla period and documents written in the Paekje period, show techniques and fighting stances that were probably the first forms of Taekwondo.
Taekwondo J Kukkiwon. The dojang is usually decorated with items such as flags, banners, belts, instructional materials, and traditional Korean calligraphy. All of these innovators, soon destined to promote enduring martial traditions within the borders of their native land, returned home from abroad undoubtedly with practical knowledge of the Taikyoku, Pinan, Bassai, Jitte, Empi and Tekki kata—all considered traditional formal exercises—that would ultimately evolve into the Kicho, Pyung-Ahn, Balsek, Sip Soo, Yunbee and Chul-Ki hyung respectively of Tae Kwon Do.
The results of this study indicate that taekwondo training can contribute to learning and academic-activity improvements, inspire the sociability that is necessary for school life, and promote the cooperation, unity, and school affection that are necessary for organizational life.
Some ITF schools adopt the sine wave style, while others do not. When the Japanese left, martial arts schools began to open in Korea.
It is believed that Sonbaes practiced Taek Kyon.