At the same time, the lighting arrangement at the entrance also needs attention. In order to make the porch brighter, lighting is usually arranged at the porch. If several lamps are installed at the top of the porch at the same time, they should be arranged in a square or a circle, because the square symbolizes founder and stability, and the circle symbolizes reunion, which is conducive to family auspiciousness. However, they must not be arranged in a triangle. Because if there is a three-light area hanging on the top of the porch, it will form a situation of inserting three incense sticks upside down, which is a great evil.