Why can't ceiling, act the role of light into a triangle

Why can't ceiling, act the role of light into a triangle

In fact, the neck of people related to the ceiling of the home.Including the ceiling and everything associated with the roof of the roof top.A person with mental problems, it is affected by household.

Some people live in the garden of independence, the roof is triangle, if the berth in the Angle, namely sleep lying under bevel instead of planar smallpox, then there will be a neurotic even insanity.

Why the ceiling, can't act the role of light into triangles related content

The duke of zhou interprets of query