This project continues my exploration of the hidden traces within finished spaces. It begins from a small, familiar gesture — the way designers or architects instinctively touch materials, or tap on walls to understand what lies beneath. I turned this everyday curiosity into a method: using an inspection stick, a piezoelectric sensor, and a recorder, I listen to the walls of my school and document how each surface responds.

The recordings reveal two kinds of sound — the open, resonant air of space, and the subtle vibrations that travel through the surface itself. I translate these into drawings and suspended layers of translucent film, each marked with black pen. The transparent sheets are hung with fishing lines, floating in air like fragments of sound or traces of listening. Each layer reflects a different way of hearing: analytical, documentary, intuitive, tactile, and rooted in memory.

Through this quiet act, I turn a simple gesture — tapping a wall — into a way of understanding space. The work invites others to listen to what is usually ignored, and to rediscover the fragile line between surface and structure, between seeing and truly sensing.