Isometric 3D Miniature City Diorama with Holiday Theme

Present a clear, 45-degree top-down isometric 3D miniature cartoon scene, depicting the classic architecture or landmark of 【{argument name="城市" default="上海"}】, and place it at the center of the composition.
Use the corresponding decorations, twinkling lights, and appropriate【{argument name="节日" default="元旦节"}】season or festival details to depict the city with a festive atmosphere for the 【{argument name="节日" default="元旦节"}】theme.
Use soft and delicate textures, realistic PBR materials, and soft, realistic lighting to create subtle shadow effects.
Make a neatly edged, small diorama-style city base.
Use a clean 【{argument name="节日" default="元旦节"}】 background color that contrasts sharply with the scene.
At the top center, display the text 【{argument name="城市" default="上海"}】 in large, bold font.
Directly below it, in medium font, display "【{argument name="节日" default="元旦节"}】Special Edition".
(Optional) Place a small square national flag icon below the text.
All text must automatically match the background contrast (white or black).
Composition: Perfectly centered, 1080×1080 square, super minimalist festive diorama aesthetic

Machine-translated — the original is what produced this result.

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