Hellow guys, Welcome to my website, and you are watching [이지사이언스] 민속놀이 속 과학을 찾아라!: 팽이, 자치기, 그네, 제기 / YTN 사이언스. and this vIdeo is uploaded by YTN 사이언스 at 2017-12-10T16:44:25-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
