Hi guys, Welcome to the Advanced Video Search Engine, and you are watching 아프니까 청춘이다 김난도 교수 "자기 자신을 발견하라". That video is uploaded by YES24 at 2011-04-12T16:34:15-07:00. We are promoting this video only for entertainment and educational purpose only. So, I hope you like & enjoy it. [kIzhp9tBHk8]