Kim has been working on converting signals that are in cities and nature but difficult to capture by human senses and converting them into audiovisual. In the exhibition, the artist pays attention to the old water tanks in the city, that are installed on every roof of the building and used for fire and water, but now remain as abandoned as dinosaurs. In this work, we intend to replace the current water flow and urban rhythm with completely different characteristics of signals and information from a stationary and empty water tank through a device that is left only as a trace. The inside of the water tank, which has come down to the floor of the exhibition hall, is filled with the pulses of the water collected according to the usual rhythm, and the visitors who enter the inside of the water tank experience the spitting of energy flow as if they were part of the water storage device .