Yǔzhòu is an immersive light installation we were commissioned for the newly created Luneng Sanya Bay Light and Art Festival in Hainan, China. The installation consists of a maze based on a triangular geometry and built of 2,5m high panels of acrylic glass. A dichroic film glued to one side of the acrylic glass converts the panels in semi-transparent and reflects or shifts the light rays along the entire colour range of a rainbow while the spectator moves in the installation. On the other side of each acrylic glass sheet, a specifically created pattern of grooves is mechanically carved in. The grooves are illuminated by powerful LED rails with subtly shifting colours located in the inferior and superior framework. The panels on the outer perimeter are provided with a mirror film converting the interior in an infinity room – a unique cosmos of overlapping light patterns and constantly changing colours.