What is the reflection in Feng Shui? What does this mean?

Reflection is related to sunlight. If the house is near the seaside, the sea water is a reflection, because sunlight will refract when it hits the water surface, and the fluctuation of the sea water will appear sparkling, which will make people dull their brains and lose their concentration when it hits the house. Another reflection is in the city center or near the business center. There are many mirrors on the outer wall of the adjacent building. These glass curtain walls are affected by the following factors