In this interactive installation site several trays carrying water and mount loudspeaker underneath, using contact microphones to collect the internal sound of building structures and amplify it with speakers synchronously. It reflects people’s actions and footsteps, and visualises the motion, every sound frequency in the space could affect the water patterns, and people could perceive noises from themselves and the place, observe the change of surrounded noises immediately. Installed the Piezo contact microphone on architecture structure including ground, window and railings. And each sound sources correspond three different speakers, producing diverse water water patterns, using projector to project the light and producing the reflection on wall and fabric. People can step, touch, hear and observe.