城市线条图集海报

Please generate a high-quality "Urban Line Atlas Poster."

This image is designed based on the visual language of a "monochrome urban line-drawing travel poster," featuring a complete composition with a large top title, mid-view street depth, core landmarks, flanking buildings, foreground figures, and a bottom signature block.

[Theme City]
City Name: Yichun
English Main Title: FOREST LINE ATLAS / YICHUN CHRONICLE
Chinese Title: Yichun · City of Forests
Country/Region: Heilongjiang Province, China
Core Landmarks: Lesser Khingan Mountains forest, Korean pine forest sea, Wuying National Forest Park observation tower
Street Scene: Small forest town streets, residential intersections with wooden buildings, forestry city atmosphere
Emotional Theme: Commuting moments in the morning mist
Main Color Tone: dark green + dark grey line drawing
Aspect Ratio: 3:4 vertical

[Overall Positioning]
This is a work that serves as a travel souvenir poster, an urban visual guide, an architectural line manuscript, and an editorial design cover. The image needs to present Yichun's unique temperament as a "city in the forest," with both urban recognition and a sense of real street life—not a standard travel poster or a single landmark illustration, but a visual archive piece of collectible value.
[Composition Design]
The top is a strong title area using the large English title "FOREST LINE ATLAS," supplemented by the subtitle "YICHUN CHRONICLE." A numbering system (e.g., No. CN-HLJ-YC-01) and brief coordinate info can be added, with a modern and design-oriented layout.
The middle is the urban street主体, using a deep street perspective composition with a slightly low angle, the road extending into the distance and gradually entering the forest area.
The core landmark is the forest observation tower or the silhouette of the Lesser Khingan forest in the distance, clear but not overly prominent, naturally blending into the street scene.
Add local architectural details on both sides: wooden houses, forestry bureau-style buildings, residential blocks, small shops, bus stops, streetlights, utility poles, simple road signs, etc., forming high-density urban information.
The foreground includes lifestyle elements: pedestrians in autumn/winter clothing, people on bicycles, residents with shopping bags, small vehicles, and fallen leaves on the ground to enhance the seasonal atmosphere.
A separate signature area at the bottom is designed as a city archive label structure, containing "YICHUN / HEILONGJIANG / CHINA" and a simplified city info module or map index-style layout.
[Text System]
The top main title is clear and eye-catching. Keep only 2–4 clear readable texts in the image (e.g., "Yichun Station," "Forestry Road," "Bus Stop"), with other signs using abstracted Chinese strokes or symbolic characters to avoid gibberish. The overall text system should be unified, restrained, and integrated into the design structure.
[Visual Style]
The overall style uses monochrome or a very limited two-color line drawing on an off-white or warm white paper texture. Lines are precise, clean, and layered, with the feel of an architectural pen manuscript and screen print texture. Foreground lines are slightly thicker, background lines thinner, with figures and objects being simple but recognizable. The style is restrained and sophisticated.

[Innovation Requirements]
Incorporate design variations in: title naming system, top layout structure, slightly low-angle street perspective, fusion composition of forest and city, bottom archive-style information module, and expression of autumn fallen leaf atmosphere.
[Avoidance Matters]
No ordinary travel poster style, no watercolor, impasto, or cartoon/chibi styles, no cyberpunk, no high-saturation colors, and no cheap souvenir style.

Please generate an independent, complete, high-definition, clear-lined vertical urban line-drawing poster with a sense of collectability and series identity.

原始提示词

请生成一张高完成度的「城市线描图鉴海报 / Urban Line Atlas Poster」。

这张图基于“单色城市线描旅行海报”的视觉语言进行设计，包含顶部大标题、中部街景纵深、核心地标、左右建筑、前景人物、底部落款的完整构图结构。

【主题城市】
城市名称：伊春（Yichun）
英文主标题：FOREST LINE ATLAS / YICHUN CHRONICLE
中文标题：伊春 · 森林之城
国家 / 地区：中国 黑龙江省
核心地标：小兴安岭森林、红松林海、五营国家森林公园观景塔
街区场景：林区小城街道、带木质建筑的居民街口、林业城市氛围
情绪主题：清晨薄雾中的通勤时刻
主色调：墨绿 + 深灰线描
画幅比例：3:4竖版

【整体定位】
这是一张兼具旅行纪念海报、城市视觉图鉴、建筑线描手稿和编辑设计封面的作品。画面需要呈现伊春“森林中的城市”这一独特气质，既有城市识别度，又有真实街头生活感，不是普通旅游海报，也不是单一地标插画，而是一张具有收藏价值的城市档案视觉作品。
【构图设计】
顶部为强标题区，使用大字号英文标题「FOREST LINE ATLAS」，辅以副标题「YICHUN CHRONICLE」，可加入编号系统（如 No. CN-HLJ-YC-01）与简要坐标信息，排版现代且具有设计感。
中部为城市街景主体，采用街道纵深透视构图，视角略微仰视，道路向远方延伸并逐渐进入森林区域。
核心地标为远景中的森林观景塔或小兴安岭林海轮廓，清晰但不过度突出，自然融入街景。
左右两侧加入本地建筑细节：木质房屋、林业局风格建筑、居民楼、小商铺、公交站、路灯、电线杆、简洁路牌等，形成高密度城市信息。
前景加入生活元素：穿秋冬服装的行人、骑自行车的人、拎购物袋的居民、小型车辆，地面有落叶增强季节氛围。
底部设置独立落款区，设计为城市档案标签结构，包含「YICHUN / HEILONGJIANG / CHINA」以及简化城市信息模块或地图索引风格排版。
【文字系统】
顶部主标题清晰醒目。画面中仅保留2–4处清晰可读文字（如“伊春站”“林业路”“公交站”），其余招牌使用抽象化中文笔画或符号化字符，避免乱码。整体文字系统需统一、克制，并融入设计结构中。
【视觉风格】
整体采用单色或极少量双色线描风格，背景为米白或暖白纸张质感。线条精密、干净、有层次，具有建筑钢笔手稿感与丝网印刷质感。近景线条略粗，远景线条更细，人物与物件简洁但可辨识，整体风格克制高级。

【创新要求】
在以下方面进行设计变化：标题命名系统、顶部排版结构、街景轻微仰视视角、森林与城市融合构图、底部档案式信息模块、秋季落叶氛围表达。
【避免事项】
不要普通旅游海报风格，不要水彩、厚涂、卡通Q版，不要赛博朋克，不要高饱和色彩，不要廉价纪念品风格。

请生成一张独立完整、高清、线条清晰、具有收藏感与系列辨识度的竖版城市线描海报。