Affiche d'Artéfact du Miroir du Vide

Cinematic dark fantasy Chinese xianxia artifact poster in a landscape 4:3 composition. Visual split layout: the left side contains an elegant text column, while the right side displays a monumental ancient treasure mirror. - Left Layout: Exactly 1 large Chinese title reading "[虚空镜]" at the top, and exactly 4 smaller paragraph blocks of poetic, mythic encyclopedia-style Chinese text arranged vertically beneath it with ample spacing, rendered in refined pale warm gold typography. - Right Subject: Exactly 1 massive circular imperial bronze mirror on a carved stone pedestal, centered on a broken circular stone dais with fractured steps. The thick ornate frame is crafted from [blackened antique bronze with worn gold edges], engraved with archaic ritual runes, cloud motifs, curling handles on both sides, a horned taotie or dragon mask at the crest, and a beast-head ornament above the base. Instead of a normal reflection, the mirror surface reveals a swirling cosmic vortex portal in [deep blue, silver white, and violet-black] with spiral nebulae and luminous star clusters. - Setting: A vast underground temple ruin or tomb hall with towering stone pillars, circular wall reliefs, cracked wet flagstones reflecting dim light, scattered rubble, and drifting cold mist. - Lighting & Color: Dramatic chiaroscuro with beams of cool light from above, subtle volumetric haze, deep charcoal, black, antique bronze, and pale golden highlights. - Style: Ultra-detailed dark fantasy realism, ancient Chinese imperial bronze craftsmanship, epic scale, high contrast. - Constraints: Exactly 1 mirror, 1 pedestal, 1 large title, and 4 paragraph text blocks. No people, modern tech, horror gore, or watermarks.