What is called the overpass evil spirit

As the bridge since the high along, often curved incline to structure.Bridge for the virtual water, inclined to go and water drainage, drainage is fortune.If residential window is on the bridge under inclined to bearing, was made the overpass.

To dissolve the overpass evil spirit, can be in ShaQi bearing put copper an elephant or a pair of bronze medallion kirin, recycling of leaked gas.