Split-Screen Cinematic Time Travel Prompt

A realistic split-screen cinematic shot of [Scene], showing the same [Gender] appearing in two different eras: [Era A] on the left and [Era B] on the right.
If a reference image is uploaded, match her or his exact face, including facial features, hairstyle, hair accessories, skin tone, and body shape.

Left side ([Era A]):
The  [Gender] appears fully visible (face + upper body). She or his wears clothing, hairstyle, and accessories authentic to [Era A], fitting the historical setting.
Environment, architecture, materials, vehicles, props and lighting must all belong to [Era A].
Atmosphere feels nostalgic and historically accurate.

Right side ([Era B]):
The same  [Gender] （same age, same face, same body proportions) appears fully visible (face + upper body) in [Era B].
She or he wears contemporary or era-appropriate fashion from [Era B], with matching modern props, technology, surroundings, and lighting.

Center area:
The two eras merge organically, with no hard dividing line.
Architectural elements, clothing textures, and props subtly transition from old to new.
The ｛Gender} in each era may glance toward the other side, creating a sense of time-travel and self-encounter.

Photorealistic, cinematic lighting, ultra-detailed textures, high realism, 8k quality.
Aspect Ratio: [Aspect Ratio]

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Scene: [example scene]
Gender：[example gender]
Era_A: [example era A]
Era_B: [example era B]
Aspect_Ratio: [example aspect ratio]