At the intersection of digital art and interactive technology, a completely new medium of expression is emerging. Transcending the limitations of traditional screens, it constructs tangible, dynamic images in three-dimensional space through the precise movement of physical units and changes in light and color. Its core lies in transforming complex coordinate data into coordinated commands from hundreds of independent servo motors, bringing the wall itself to life and transforming it into an interface capable of real-time interaction. Our "Wall Matrix" is a concrete manifestation of this cutting-edge concept. This giant interactive wall, measuring 3500*800*2800mm, is composed of hundreds of independently retractable and color-changing servo columns. When visitors make gestures in the sensing area—whether waving, drawing a circle, or clenching a fist—an advanced gesture recognition system captures the movement trajectory and instantly drives the corresponding matrix columns to retract