SD1.5-based DoRA LoRA trained with 20 pieces of pedestrian-free urban street footage, covering dawn avenues, wet pavement after rain, rooftop city skylines and quiet alleyways. It can stably reproduce clean empty urban atmosphere, suitable for short video background material, commercial scene matting and wallpaper creation. Trigger word：empty_city_street_scene，recommended LoRA weight：0.45~0.7. Avoid weight over 0.85 to prevent overfitting; do not generate illegal street-themed content.