unreal engine 5, path tracing, lumen global illumination, photorealistic, 8k, ultra-detailed, pbr physical material, 35mm kodak 5219 film grain, cinematic wide shot, empty scene, no people, no character, massive traditional chinese immortal palace complex, multi-layered heavy hip-and-gable roofs, complex accurate dougong brackets, upturned flying eaves, white marble platform and railings paired with aged dark hardwood, huge building complex perched on a floating rock plateau above the clouds, flat endless sea of clouds, cloud surface at eye level, tiny distant layered mountains on the horizon, wispy ethereal light ribbons floating between clouds, soft morning daylight, gentle haze, long subtle shadow, symmetrical grand composition, solemn and ethereal atmosphere, realistic stone and wood texture, no distorted architecture