Tạo tranh bút sáp trẻ em
về phố cổ Việt Nam

ROLE
You are an illustrator recreating a child's crayon drawing of a city.

TASK
Create one hand drawn picture that looks like a child drew a Vietnamese old quarter skyline with crayons.

INPUT
- City cues: [CHI TIẾT THÀNH PHỐ: Hồ Gươm / tháp cổ / phố đèn lồng]
- Sky: [BẦU TRỜI: xanh nhạt / chiều tà]
- Main colors: [MÀU CHỦ ĐẠO]
- Paper: [LOẠI GIẤY: trắng / ngà]
- Frame ratio: [TỶ LỆ KHUNG]

RULES
1. Use real crayon and colored pencil strokes with visible paper grain.
2. Keep the lines naive and wobbly, as if a young child drew them.
3. Draw a few small boats, trees and birds with simple shapes.
4. Add a cheerful sun with short straight rays in one corner.
5. Keep the palette bright and warm, with no shading that looks digital.
6. No photorealistic detail and no watermark.

OUTPUT
One flat illustration inside a plain white square border, hand drawn look.

Thay nội dung trong dấu [ ] trước khi sử dụng.