The Vacant Room Series concerns the relationships among structure, rotation and space. In the video, the rotating light is treated as a sculpture of space which can be shaped by the malleability and variability of light itself. The tracks of light form a rotating light circle, captured by a revolving camera. The repetitive activity created by rotation matters not in the difference of tracks but in the disrupted stability and emotions of both the creator and observers evoked by the experience accumulated with the passing of time. The Vacant Room Series has attempted to investigate the possibilities between structure and light by resetting the device to simulate the corresponding relationship between moving clock hands i.e. the relationship between the light and the camera. The video shows the transformation of space and light into a sensational stimulation of uncertainty. The strings of light circles create imbalance against gravity and overthrow the common understanding of time and space.