Social Design X-Space Window by Du Heli In some kinds of situations of the fire that passageway has been blocked in accident. No matter what you do, you cannot escape from the fire through the door. To find a solution for trapped person get away form the fire quickly, the team find the point in window frame redesign. X-Space is redesign of the window frame including rotational structure holder. When fire coming up, all family members can easily get out of the fire through the X-Space avoiding the injury from the fire and smoke behind the outer wall.