Jo Yoon, son of Naju noble Jo Won-suk, was a natural born martial artist, who passed high-level military exams at the tender age of 19, and was promoted to captain at 21.
Jo Yoon, sin Naju plemića Jo Won-suk, je bio rođeni borac, koji je završio visoke vojne ispite s 19 godina, i bio unaprijeđen u kapetana s 21-om godinom.