Ken Lum's *Mirror-Diptychon* (2004) is a two-part work composed of vinyl text applied to mirrored surfaces mounted to acrylic on aluminium. The use of reflective material implicates the viewer directly within the piece, collapsing the boundary between subject and observer. Lum's characteristic engagement with language, identity, and social tension is embedded in the work's material form, where text and reflection operate simultaneously as message and medium.