In 2004, a metal entrance gate on Shanxi Road served as the main access point for five separate residences. The front of the gate has individual mail slots for each household, creating a clear and efficient system for mail delivery.

Inside the gate, each slot corresponds to a physical mailbox mounted on the interior side, reinforcing the gate’s dual role as both a boundary and a channel for daily communication. The structure reflects a practical approach to communal living, in which multiple households share infrastructure while maintaining distinct identities within a single threshold.