The automatic wheelchair equipped with a searchlight slowly moves and stops making an afterimage of lights in <Night Walker>(2013); a spraying of light and water creates rainbow momentarily in <Suddenly, Rainbow>(2013); a theatrical space consists of things of different kinds of things in <Using The Ear In Order To Hear>(2014). For this exhibition, the artist presents Tech Rehearsal, the mixture of his previous works with the recent works. ‘Tech rehearsal’ is a word used in stage technology, which is the rehearsal to check on lights and equipment. Previous works such as Night light, a portion of Using ears for listening, and Rainbow all of a sudden are stored on the back of the stage structure in stand-by position, while a new video work,<Skin Paster>, starring by internet BJ is placed in front. Skin Paster is a video work, which shows a BJ host an Internet show while her image is overlapped with a 3D avatar girl.