[small ancient earthen room in the southern outskirts of chang'an, northern zhou dynasty, interior], [rectangular, about 3m by 4m, ceiling about 2.3m, rammed earth walls with rough uneven surface, packed earth floor, low blackened wooden beams with cobwebs and dust strands], [old wooden door in the south section of the west wall, about 0.9m wide and 1.9m high, opening inward, rough plank surface, leading to the outside alley; high paper window on the south wall, sill about 1.2m above floor, about 0.8m wide and 0.9m high, top near the beam, facing south, torn oiled paper, no glass], [long earthen kang bed along the north wall, about 3m long and 2m wide, edge facing south, worn reed mat with holes on the kang; rough wooden stand about 0.8m high at the west end of the kang; broken earthen stove against the northwest corner, stove top about 0.8m high, mouth facing southeast, wall behind the stove blackened by smoke; kang pit below the west section of the kang edge, opening south, about 0.4m high and 0.5m wide], [entering from the west door, the stove is at the front left, the kang is straight ahead slightly left, the south window is on the right, the east wall is plain and empty], [bronze mirror on the wooden stand, edge greenish and dim; medicine pot on the stove with faint residual smoke], [east wall and rear roof are minimally extended, no new doors windows or furniture], [cold overcast daylight from the high south paper window, direction from south to north, height around the middle-upper part of the window], spatial structure reference sheet, 3/4 isometric aerial view of the space, showing three walls floor and main furniture, fixed angle, structure clarity over cinematic composition, simple floor plan beside the isometric view marking door window and furniture positions, material swatches for main surfaces, key light direction marked with arrow, scene keyword label in a corner, no character, no additional furniture or large objects beyond described, surface wear dust stains cobwebs and everyday traces are allowed, 5th to 6th century china, northern dynasties period, pre-tang, no modern elements, no ming-qing architectural ornament, bleak and cold atmosphere, neutral cold daylight as baseline light, muted cold grey and earth-brown palette, desaturated, no warm color cast, production design reference, historical drama aesthetic, no watermark, realistic photography, consistent lighting, realistic materials, no decorative elements, 8k