用水彩绘制一幅松散的城市速写，画的是{CITY}繁忙的十字路口，纵向 3:4，画在纯亮白色冷压水彩纸上，纸纹清晰可见。不要奶油色、米色…

Create a loose urban-sketch watercolour of a busy street crossing in {CITY}, vertical 3:4, on pure bright-white cold-press paper with visible texture. No cream, beige, sepia, or vintage tint. TITLE: Paint only “{CITY}” across the empty upper sky in large expressive hand-lettering. Use translucent warm-grey watercolour with varied brush weight, darker pooling, dry-brush gaps, an irregular baseline, and slight tonal fade. It must look hand-painted with the same brush as the artwork, never printed or pasted. Add a subtle pale blue/apricot wash behind it, fading before the edges. SCENE: Low-angle pavement view of a wide multi-lane crossing. Make {HERO} the dominant middle-distance landmark, with distinct {LEFT}, {RIGHT}, and smaller {FAR} buildings. Include {VEHICLE}, a few sedans, and one small {PUNCH} vehicle. Keep buildings clearly different in height, material, and colour. LINEWORK: Rough black fineliner drawn first: loose, wobbly, broken freehand strokes, imperfect perspective, occasional overshoots, and minimal single-direction hatching. No perfectly ruled lines. DEPTH: Strong density gradient. Foreground is about 60% resolved and colourful; mid-ground about 30% with softened edges; distance about 10%, mostly pale outlines and washes. Leave some distant buildings unpainted. The outer 20% of every edge and all four corners must remain untouched white paper. Never create an even wash or vignette. ARCHITECTURE: Avoid complete window grids. {HERO} gets only a few broken mullion lines with large areas of wash-only glass. Its glass reflects broad sky-blue and white-paper sweeps, warm apricot sunlight, and only two soft warped building reflections. PEOPLE: 10–12 figures scattered across near, middle, and far distances. Vary size, spacing, overlap, poses, and activities. Use tiny loose ink marks for distant figures; minimal facial detail; soft grey contact shadows; let some outlines dissolve into the washes. GROUND: Darker visual weight in the bottom fifth: near kerb, sparse pavement joints, grit, and a cast shadow toward the viewer. Paint only portions of the crosswalk, leaving large areas of white paper. COLOUR & LIGHT: Loose off-register watercolour over ink with wet-in-wet blooms, backruns, hard edges, and dry-brush skips. Use {WARM} for sunlit architecture/pavement, muted sage for trees, and cerulean for sky/glass. At least four distinct hues; no hue dominates. {PUNCH} is a tiny accent under 3%. White paper is the brightest value. Keep only 4–5 small deepest-value accents. SKY & TREES: Mostly white sky with sparse broken blue strokes. Trees appear in separated clusters with wide white gaps; vary their size and treatment, including one large cropped foreground tree. SIGNAGE: All signs are abstract and illegible. No readable text besides {CITY}. AVOID: photorealism, digital/vector style, glossy 3D, uniform detail, full background washes, solid-black lettering, complete window grids, straight ruled geometry, continuous tree rows, detailed distant buildings, fully painted crosswalk, cream/sepia paper, borders, frames, signatures, logos, or watermarks.

用水彩绘制一幅松散的城市速写，画的是{CITY}繁忙的十字路口，纵向 3:4，画在纯亮白色冷压水彩纸上，纸纹清晰可见。不要奶油色、米色、深褐色或复古色调。 标题：只在空旷的上方天空处以大型生动的书法手写体绘出"{CITY}"。使用半透明的暖灰色水彩，笔触粗细有变化，有较深的颜料聚积、干笔空隙、基线不规则，并带有轻微的色调渐淡。必须看起来与画面用同一支笔手绘而成，绝不能是印刷或粘贴的效果。在其背后添加一抹微妙的淡蓝/杏色淡彩晕染，在边缘前渐隐。 场景：低角度的人行道视角，呈现宽阔的多车道路口。将{HERO}作为占主导地位的中景地标，配以清晰的{LEFT}、{RIGHT}以及较小的{FAR}建筑。包含{VEHICLE}、几辆轿车，以及一辆小巧的{PUNCH}车辆。建筑之间在高度、材质和颜色上要明显不同。 线条：用粗糙的黑色针管笔先勾线：松散、颤抖、断裂的自由手绘笔触，透视不完美，偶尔过线，保留最少的单向排线。绝不出现完全笔直的规整线条。 纵深：强烈的密度渐变。前景约 60% 清晰且色彩饱满；中景约 30%，边缘柔化；远景约 10%，多为淡色轮廓与淡彩。保留部分远景建筑不上色。每条边缘的外侧 20% 及四角都必须保持留白未触。绝不形成均匀的水彩底色或晕影。 建筑：避免完整的窗格。{HERO}仅以几条断裂的竖框线表现，大面积玻璃仅以淡彩处理。其玻璃反光为广阔的天蓝与留白纸面的大笔扫色、温暖的杏色阳光，以及仅两处轻微扭曲的建筑倒影。 人物：10–12 个人物分布在近、中、远距离。尺寸、间距、重叠、姿势和活动各异。远处人物用微小松散的墨点表示；面部细节极少；柔和的灰色接触阴影；让部分轮廓融入淡彩之中。 地面：底部五分之一视觉重量较重：近处的路缘、稀疏的铺装接缝、砂砾，以及朝向观者的投射阴影。只绘制斑马线的一部分，保留大面积白纸。 色彩与光线：在墨线之上用未完全套准的水彩，呈现湿叠湿晕染、回渗、硬边与干笔飞白。以{WARM}表现受光的建筑与铺装，以柔和的鼠尾草绿画树，以蔚蓝画天空与玻璃。至少使用四种不同的色调；不让任何一种色调占据主导。{PUNCH}作为微小点缀，占比不到 3%。白纸为最亮色。仅保留 4–5 处小块最深色调点缀。 天空与树木：天空以留白为主，散布稀疏断裂的蓝色笔触。树木以分离的成簇形式出现，留有大块白色空隙；其大小与处理方式各异，其中包含一棵被裁切的大型前景树。 标识：所有标牌均为抽象且不可辨认。除{CITY}外不出现任何可读文字。 避免：照片写实、数字/矢量风格、闪亮 3D、均匀细节、满底背景水彩、纯黑文字、完整窗格、笔直规整的几何形状、连绵不断的树行、精细的远景建筑、完整涂满的斑马线、奶油/深褐色纸张、边框、画框、签名、标志或水印。