又捞了一个ChatGPT的出图方案：复古版、印刷风格的城市海报设计。
提示词：
Flat vector professional T-shirt graphic design on black background, 城市 written in bold retro font using 颜色1-颜色2-颜色3-颜色4 4-color scheme, each letter separated by vertical color blocks, featuring 地标建筑 in black silhouette at the bottom, optionally adding 点缀元素 relevant to 城市, clean, minimalistic, stylish --ar 1:1
