To create realistic lighting in Unreal Engine, you can start by utilizing the engine's basic lighting tools, such as point lights, spotlights, and directional lights, to simulate various light sources. Adjusting their properties like intensity, color, and falloff will help you shape the scene's mood. environment lighting and reflections, enhancing realism.Unreal Engine 5's Lumen system for dynamic global illumination and reflections, which can significantly contribute to the authenticity of your night city scene.