Futuristic Sci-Fi City Floating in the Universe AI Image Prompt

Positive prompt: 8K ultra-high-definition ultimate picture quality, future sci-fi epic style. A futuristic bustling city suspended in the vast universe, with unique and creative architectural styles, radiating brilliant technological light. The streets inside the city are bustling with traffic, people coming and going, full of vibrant life. The city is surrounded by dazzling starry sky and mysterious beautiful nebulae, with rich color layers. Future cutting-edge sci-fi aircraft shuttle freely between buildings, various time-travel devices emit a faint glow, and intelligent flying robots patrol and operate over the city. Professional cinematic lighting, distinct light and shadow layers, the overall picture is stunning and spectacular, full of cutting-edge technology and the vast mystery of the universe. In the lower right corner, a clear and natural handwritten signature 'only840820' is subtly integrated, with fine and low-key strokes, not disrupting the overall grand sci-fi atmosphere. Negative prompt: Low quality blur, city without suspension effect, mediocre buildings without creativity, no technological light, empty streets without traffic, no starry sky and nebula background, no future aircraft, time-travel devices and flying robots, plastic cheap texture, harsh lighting with overexposure and crushed blacks, appearance of redundant earth landforms, sun and moon, oversized and abrupt signature, edge aliasing, AI distortion and deformation, no shock of the futuristic city in the universe.