A reflecting apparatus comprising: an array of reflectors including a first subset of reflectors and a second subset of reflectors, wherein the first subset of reflectors guide light toward a first viewing position and the second subset of reflectors guide light toward a second viewing position that is different from the first viewing position. According to various embodiments, an existing member profile attribute included in a member profile page of a particular member of an online social network service is identified. The second metallic lead forms a second winding turn around a portion of the magnetic core. Subsequently, the porous mass impregnated with the solidification assistant is immediately transported to a drying furnace for drying. The DCDC module according to the present invention has simple circuit structure, low hardware cost, and high load capacity. The sides comprise four straight sides and four curved sides.