白模研究图：先解决构图再谈材质

Create a clay render study of a building, the stage at which composition and form are judged before any material distracts. Show the entire scene — building, ground, context, trees, figures — in a single uniform matte off-white material with no colour, no texture and no reflectivity, so only geometry and light remain. Detail the lighting as a simple sky plus one sun, producing clean soft shadows that describe every surface's orientation and every recess's depth. Show the ambient occlusion clearly in every junction, under every overhang and where the building meets the ground. Detail the composition as the point of the exercise: the framing, the horizon height, the balance of solid and void, the placement of the figures, all judged without the flattery of materials. Show the trees as simplified white forms and the figures as plain white silhouettes at correct scale. Keep the background as a plain gradient. Monochrome clay render, form and light only, no materials, eye-level view.