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: {argument name="city" default="Yichun"} English Main Title: {argument name="English title" default="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: {argument name="main color" default="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.