This technique was developed by Tenshinhan, and harnesses chi to create a flash of blinding light to temporarily debilitate the opponent. When he first used the technique, many members of the audience at the Ten'kaichi Budokai were blinded as well. However, those who wore sunglasses were unaffected by the bright light. Although developed by Tenshinhan, Son Goku and Kuririn have both 'borrowed' the technique for use in desperate situations.
Dragon Ball OnlineEdit
It means 'Fist of the Sun' in Chinese.