Jin Si Yon has focused on 'light', the source of the media technology that he works with. While his previous work dealt wih the light of contemplation hugged by Mother Nature and the one of civilization, 'SIGN' on this exhibition makes an attempt to give shape to human light like invisible energy. 'SIGN', which means a symbol, a constellation, etc shows the lights of nature, mankind and civilization, which repeat conflict and coexistence and form circulatory order.