There is provided a method for manufacturing a honeycomb structure, wherein a raw material containing Al2O3 is used as the ceramic raw material, and a low melting point reacting substance is allowed to be contained in the clay at least before being formed to obtain a honeycomb structure having a mean pore diameter of 20 to 500 \u03bcm as the honeycomb structure. For enhancement and evenness of the light projected, a reflective mirror in the inner space surrounded by a spiral lamp formation is arranged to thereby reflect the incident light through a gap between every two immediate neighboring lighting turns. A server of the social communications network maintains a respective identity for each connected networked device, respectively, of the social communications network. The social network value is based on a subscription probability of the user and further based on subscription probabilities of other users in the social network that are included in an affinity set of the user.