Borrowed scenery (借景, jie jing)

Folding screen

It is a concept for garden design called borrowed scenery. Certain architectural arrangements allow people to see many special landscapes in the garden, e.g. you can see the lake and the mountains in the distance through the door hole in a certain place or through the window hole on the promenade to see different parts of the garden.
If a mirror is used on a folding screen, you can borrow the interior or exterior landscape on the folding screen by reflecting the mirror. If the folding angle of the screen and the position change, the scenery on the screen changes accordingly. In order to make the screen more dynamic, window insulation film will be used. If the light on one side of the screen is brighter than on the other side, it looks more like a piece of glass from the dark side and from the light side it would be like a mirror. If the brightness is the same on both sides, you can see the objects behind the screen and the superimposed reflection from the mirror.