JIANAN CAI
This isometric view shows a room with a circular cone interior, two windows, and a door. The outside of the room is a frustum of a cone and the inside is a circular cone. Intersecting the interior volume in two locations is a cylindrical opening oriented perpendicular to the circular truncated cone‘s outer face. Also，there is a gap above the circular truncated cone.A hook face opening connects the outer and inner surfaces of the room creating a doorway.
This elevation view shows the room's window，in the shape of a circle. It is created by three-dimensional voids that intersect the outer and inner surfaces of the room exposing the thickness of the walls. The dashed lines show the profile of the interior and door beyond.
This section cuts through the circular cone interior and the cylindrical window showing the thickness of the room's walls. Beyond is the door.