Prompt: Futuristic and modern poster depicting an alumni reunion in Shenzhen. Front and center are two alumni in trendy outfits with arms on each other's shoulders, smiling brightly, representing friendship. Rays of light shine from their augmented reality glasses. Behind them is a minimalist cyberpunk background with a huge holographic pavilion, representing a feeling of homecoming. Below in a vibrant tech font are the words: \"Innovation and reunion\". At the bottom is a QR code floating above a virtual screen. Composition captures the dynamic tech spirit of Shenzhen in a simple yet profound pop art style.