With the【scene】as the core, create a grand, ancient, realistic and narrative-rich medieval fantasy scene. The scene is set within【a snowy mountain gorge / a rugged valley / a cliff river-canyon / a primeval forest / an alpine lakeshore / cloud-and-mist mountains】, where a vast European medieval【royal city / castle / fortress / mountain city-state / ancient settlement】extends upward in layers, conforming to the natural terrain. The buildings do not stand alone but are embedded in the mountain, cling to the rock face, span the gorge, and form a fully unified world together with forests, streams, stone bridges and steep peaks. The building complex is composed of towering round towers, slender spires, heavy walls, huge city gates, arched stone bridges, bastions, galleries, stone steps, cantilevered platforms and tiered dwellings. The towers vary in height with rich silhouettes; some roofs use【dark-red clay tiles / dark-grey pointed roofs / verdigris metal roofs】. The structure is grand and complex yet keeps sensible proportions and realistic load-bearing logic, portraying an ancient kingdom formed over centuries of expansion. The stone walls have a rough, realistic material quality, with visible weathering cracks, rain marks, moss, vines and local vegetation on the surface; wooden balconies, narrow windows, stone carvings, hanging banners, torches and warm lights serve as detailing. The architecture is ornate but not overly refined, emphasizing heaviness, solidity, age and a genuine sense of history, avoiding identically copied towers and a brand-new, clean model-like quality. In the foreground, place【a column of knights / a royal envoy party / a merchant horse caravan / a wedding procession / patrolling guards / pilgrims / ordinary residents】advancing along【a winding dirt road / a damp cobbled street / a shallow stream / a gorge road / the gate avenue / an ancient stone bridge】toward the depths of the city. The figures and horses keep a relatively small scale to reinforce the enormous scale of the mountains, walls and high towers, while forming a clear story line and visual guidance. The composition uses a vertical cinematic frame, presented from【a following viewpoint behind the procession / a low-angle view from the bottom of the gorge / observing from outside the gate inward / the central-axis view of the street / a low camera position by the stream / a distant view of the castle from beneath a giant tree】. The foreground uses trees, rocks, building edges or bridges to form natural framing; the mid-ground highlights the marching figures, roads and town life; the background is made of high tower buildings, snow mountains and cloud layers, with clear foreground-midground-background layering and vast depth. The sky has enormous natural volumetric cloud masses; sunlight penetrates through the clouds, creating soft volumetric light, alternating light and shadow, and atmospheric perspective between the buildings and valleys. Nearby details are crisp and heavy; distant peaks gradually merge into a blue-grey haze. The overall palette is dominated by rock grey, old-brick brown, deep forest green, misty blue-grey and desaturated dark red, with touches of warm golden sunlight or firelight, forming a restrained, natural warm-cool contrast. The overall style is realistic medieval fantasy cinematic concept art, blending real European castles, mountain city-states and a lightly fantastical worldview. The scene is grand but not empty, the architecture complex but not cluttered; the sense of fantasy comes from surreal scale and terrain rather than exaggerated magic effects. It emphasizes real materials, environmental storytelling, epic scale, natural light and shadow, immersion and cinematic camera language. Ultra-fine environment design, grand vertical composition, realistic stone and vegetation textures, complex architectural layering, cinematic-grade natural light, volumetric clouds, valley mist, atmospheric perspective, epic feel, immersive worldview, realistic fantasy, premium texture, 9:16 vertical. Please generate the image.