Why do render bricks reflect light?

Hello, the reflectivity of a material is determined by its properties. The reflectivity strength is ranked from strongest to weakest as follows: Microcrystalline stone > Polished tiles > Glazed polished tiles > Solid marble > Soft bright tiles > Antique tiles > Modern antique tiles. If you want stronger reflectivity, choose the properties of microcrystalline stone; if no reflectivity is needed, choose modern antique tiles to upload.