A curtain assembly includes a first curtain unit, a second curtain unit and a third curtain unit which includes multiple curtain pieces and each curtain piece includes an inside and an outside. Multiple first magnets are connected to the lower portion of the inside of each curtain piece, and multiple second magnets are connected to the top portion of the outside of each curtain piece. The second curtain unit is connected to the third curtain unit, and third curtain unit is connected to the first curtain unit. The multiple curtain pieces are able to be individually folded to introduce outside light into the room via the folded curtain pieces.