of Duanwei examined students. Six Duanwei can use the title of Master as this is the highest technical grade. 4. Qinghu—si duan: Bronze/blue Tiger 5. Yinhu—wu duan: Silver Tiger 6. Jinhu—liu duan: Gold Tiger Advanced Level: Advanced level is only awarded to very experienced masters with excellent reputation in Wushu. The person awarded such a Duan is officially allowed to call himself "Grand Master". 7. Qinglong—qi duan: Bronze/blue Dragon 8. Yinlong—ba duan: Silver Dragon 9. Jinlong—jiu duan: Gold Dragon The term Dan was used on the badges up to 2005 when the term Duan was then used on the badges, however the term Dan was never used on the certificates of grade, the certificates always use the term Duanwei. Korean martial arts Korean martial arts lacked a grading system up until the Japanese occupation (1910–1945) during which a variety of Japanese martial arts were introduced into the Korean school system, most notably judo, karate-do and kendo. After the occupation ended, newly emerging martial arts like taekwondo, tang soo do, soo bahk do and hapkido adopted the dan (단, 段) and (급, 級) ranks. The dan rank system is also used by baduk players. Nowadays, the Korea Taekkyon Association also issues dan ranks to taekkyeon practitioners. Someone who has received a dan rank is called a (유단자, 有段者). Someone who has received a "high" dan rank (6th Dan upwards) is called a (고단자, 高段者). In some Korean schools, most notably in Kukkiwon-style Taekwondo, there is also a poom system in place (품, 品; "pum" using standard Romanization). Practitioners who have not yet reached the age of 15 cannot test for a dan rank. For them, there is a system of four poom grades. After they reach the age of 15, their poom-grade can be changed to the corresponding "dan"-grade. Ranks in Korean When numbering the dan ranks, Sino-Korean numbers are used. Common names for the dan ranks are thus: Il dan (일단, 一段): first-degree black belt (also known as cho dan (초단, hanja: 初段)) I dan (이단, 二段): second-degree black belt Sam dan (삼단 三段): third-degree black belt Sa dan (사단, 四段): fourth-degree black belt O dan (오단, 五段): fifth-degree black belt Yuk dan (육단, 六段): sixth-degree black belt Chil dan (칠단, 七段): seventh-degree black belt Pal dan (팔단, 八段): eighth-degree black belt Gu dan (구단, 九段): ninth-degree black belt Sip dan (십단, 十段): tenth-degree black belt For most Korean martial