请先填写必填项："Detailed architectural lines showing wall segments, watchtowers, and defensive structures", "Numerical measurements for wall height, width, and tower spacing", "Elevation labels for wall sections and towers", "Side elevation and top-down layout illustrating wall curvature along terrain", "Wide panoramic view of the wall stretching across mountains", "Natural daylight with clear or lightly clouded sky", "Realistic colors with visible stone texture and surrounding landscape", "Educational poster", "Architectural comparison", "Historical visualization", "Tourism visual aid"
