diff --git a/assets/clouds/cloud_0.png b/assets/clouds/cloud_0.png
new file mode 100644
index 0000000..d1b757c
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diff --git a/assets/clouds/cloud_1.png b/assets/clouds/cloud_1.png
new file mode 100644
index 0000000..a636de2
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diff --git a/assets/clouds/cloud_2.png b/assets/clouds/cloud_2.png
new file mode 100644
index 0000000..b4535e4
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diff --git a/assets/clouds/cloud_3.png b/assets/clouds/cloud_3.png
new file mode 100644
index 0000000..614646e
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diff --git a/assets/clouds/cloud_4.png b/assets/clouds/cloud_4.png
new file mode 100644
index 0000000..2966af4
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diff --git a/assets/clouds/cloud_5.png b/assets/clouds/cloud_5.png
new file mode 100644
index 0000000..302998a
Binary files /dev/null and b/assets/clouds/cloud_5.png differ
diff --git a/assets/clouds/cloud_6.png b/assets/clouds/cloud_6.png
new file mode 100644
index 0000000..d35148e
Binary files /dev/null and b/assets/clouds/cloud_6.png differ
diff --git a/assets/clouds/cloud_7.png b/assets/clouds/cloud_7.png
new file mode 100644
index 0000000..25812af
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diff --git a/assets/clouds/cloud_8.png b/assets/clouds/cloud_8.png
new file mode 100644
index 0000000..a7c6993
Binary files /dev/null and b/assets/clouds/cloud_8.png differ
diff --git a/src/server/main.py b/src/server/main.py
index 74525cf..5673dac 100644
--- a/src/server/main.py
+++ b/src/server/main.py
@@ -556,7 +556,8 @@ def get_map():
         "width": w,
         "height": h,
         "data": map_data,
-        "regions": regions_data
+        "regions": regions_data,
+        "config": CONFIG.get("frontend", {})
     }
 
 
diff --git a/static/config.yml b/static/config.yml
index d52b4ab..5198946 100644
--- a/static/config.yml
+++ b/static/config.yml
@@ -38,4 +38,8 @@ nickname:
   minor_event_threshold: 25  # 获得绰号需要的短期事件数量
 
 save:
-  max_events_to_save: 1000
\ No newline at end of file
+  max_events_to_save: 1000
+
+frontend:
+  water_speed: none
+  cloud_freq: low
\ No newline at end of file
diff --git a/tools/img_gemini/clouds/cloud_0.png b/tools/img_gemini/clouds/cloud_0.png
new file mode 100644
index 0000000..d1b757c
Binary files /dev/null and b/tools/img_gemini/clouds/cloud_0.png differ
diff --git a/tools/img_gemini/clouds/cloud_1.png b/tools/img_gemini/clouds/cloud_1.png
new file mode 100644
index 0000000..a636de2
Binary files /dev/null and b/tools/img_gemini/clouds/cloud_1.png differ
diff --git a/tools/img_gemini/clouds/cloud_2.png b/tools/img_gemini/clouds/cloud_2.png
new file mode 100644
index 0000000..b4535e4
Binary files /dev/null and b/tools/img_gemini/clouds/cloud_2.png differ
diff --git a/tools/img_gemini/clouds/cloud_3.png b/tools/img_gemini/clouds/cloud_3.png
new file mode 100644
index 0000000..614646e
Binary files /dev/null and b/tools/img_gemini/clouds/cloud_3.png differ
diff --git a/tools/img_gemini/clouds/cloud_4.png b/tools/img_gemini/clouds/cloud_4.png
new file mode 100644
index 0000000..2966af4
Binary files /dev/null and b/tools/img_gemini/clouds/cloud_4.png differ
diff --git a/tools/img_gemini/clouds/cloud_5.png b/tools/img_gemini/clouds/cloud_5.png
new file mode 100644
index 0000000..302998a
Binary files /dev/null and b/tools/img_gemini/clouds/cloud_5.png differ
diff --git a/tools/img_gemini/clouds/cloud_6.png b/tools/img_gemini/clouds/cloud_6.png
new file mode 100644
index 0000000..d35148e
Binary files /dev/null and b/tools/img_gemini/clouds/cloud_6.png differ
diff --git a/tools/img_gemini/clouds/cloud_7.png b/tools/img_gemini/clouds/cloud_7.png
new file mode 100644
index 0000000..25812af
Binary files /dev/null and b/tools/img_gemini/clouds/cloud_7.png differ
diff --git a/tools/img_gemini/clouds/cloud_8.png b/tools/img_gemini/clouds/cloud_8.png
new file mode 100644
index 0000000..a7c6993
Binary files /dev/null and b/tools/img_gemini/clouds/cloud_8.png differ
diff --git a/tools/img_gemini/split_cloud.py b/tools/img_gemini/split_cloud.py
new file mode 100644
index 0000000..15559c5
--- /dev/null
+++ b/tools/img_gemini/split_cloud.py
@@ -0,0 +1,127 @@
+import os
+import numpy as np
+from PIL import Image, ImageFilter, ImageChops
+
+def split_cloud_smart():
+    input_path = os.path.join(os.path.dirname(__file__), 'origin', 'cloud.jpg')
+    output_dir = os.path.join(os.path.dirname(__file__), 'clouds')
+    
+    if not os.path.exists(output_dir):
+        os.makedirs(output_dir)
+        
+    print(f"Processing {input_path}...")
+    
+    try:
+        img = Image.open(input_path).convert("RGBA")
+    except Exception as e:
+        print(f"Error opening image: {e}")
+        return
+
+    # 1. 智能采样背景色 (Smart Sampling)
+    # 取图像四周边缘的像素来计算背景特征，比只取一个角更稳健
+    width, height = img.size
+    # 提取上、下、左、右四条边的像素
+    top_edge = np.array(img.crop((0, 0, width, 1)))
+    bottom_edge = np.array(img.crop((0, height-1, width, height)))
+    left_edge = np.array(img.crop((0, 0, 1, height)))
+    right_edge = np.array(img.crop((width-1, 0, width, height)))
+    
+    # 合并边缘像素
+    edges = np.concatenate([
+        top_edge.reshape(-1, 4), 
+        bottom_edge.reshape(-1, 4), 
+        left_edge.reshape(-1, 4), 
+        right_edge.reshape(-1, 4)
+    ])
+    
+    # 计算背景色的平均值和标准差，用于确定容差范围
+    bg_mean = np.mean(edges, axis=0)
+    print(f"Smart sampled background color (RGBA): {bg_mean}")
+
+    # 2. HSV 色彩空间分离 (HSV Separation)
+    # 将图片转为 HSV，利用饱和度(S)和亮度(V)来区分云(通常S低V高)和深色背景(通常S高V低)
+    hsv_img = img.convert("HSV")
+    hsv_data = np.array(hsv_img)
+    rgb_data = np.array(img)
+    
+    # 提取通道
+    H, S, V = hsv_data[:,:,0], hsv_data[:,:,1], hsv_data[:,:,2]
+    R, G, B = rgb_data[:,:,0], rgb_data[:,:,1], rgb_data[:,:,2]
+    
+    # 计算 RGB 欧氏距离 (针对平均背景色)
+    # 只比较 RGB 前三个通道
+    diff_r = R.astype(float) - bg_mean[0]
+    diff_g = G.astype(float) - bg_mean[1]
+    diff_b = B.astype(float) - bg_mean[2]
+    rgb_distance = np.sqrt(diff_r**2 + diff_g**2 + diff_b**2)
+    
+    # 定义阈值
+    # RGB 容差：允许背景有一定的颜色波动
+    rgb_tolerance = 60.0 
+    
+    # HSV 辅助判断：
+    # 背景通常是深紫色：需要保护云朵(白色/灰色)，云朵的特征是低饱和度(Low S)
+    # 如果一个像素离背景色有点远，但它饱和度很高且偏紫，那它可能还是背景(渐变区)
+    # 如果一个像素离背景色很近，但它饱和度极低(它是灰色的云边缘)，那应该保留
+    
+    # 创建 Alpha Mask (0 为完全透明/背景，255 为完全不透明/云)
+    # 初始 Mask：距离背景色越近，Alpha 越小
+    alpha_mask = np.zeros_like(H, dtype=np.float32)
+    
+    # 核心逻辑：
+    # 1. 主要是背景：RGB 距离 < 容差
+    # 2. 渐变增强：对于边缘区域，使用 Sigmoid 函数做软过渡，而不是硬切
+    
+    # 归一化距离，距离越小越接近背景
+    normalized_dist = np.clip(rgb_distance / rgb_tolerance, 0, 1)
+    
+    # 简单的线性映射翻转：距离越小(背景)，Alpha越小(透明)
+    # 使用平滑函数 (Smoothstep) 让过渡更自然: 3x^2 - 2x^3
+    alpha_mask = np.clip((normalized_dist - 0.2) / 0.6, 0, 1) # 0.2到0.8之间过渡
+    alpha_mask = alpha_mask * alpha_mask * (3 - 2 * alpha_mask)
+    
+    # 3. 保护云朵核心 (Cloud Core Protection)
+    # 如果像素很亮(V高)且饱和度很低(S低)，强制认为是云，设为不透明
+    # 假设云是白色的，背景是深色的
+    is_cloud_core = (V > 150) & (S < 60) 
+    alpha_mask[is_cloud_core] = 1.0
+    
+    # 4. 转换回 0-255 并应用羽化
+    final_alpha = (alpha_mask * 255).astype(np.uint8)
+    
+    # 创建蒙版图像
+    mask_img = Image.fromarray(final_alpha, mode='L')
+    
+    # 边缘羽化 (Matte Refinement)
+    # 对蒙版进行轻微模糊，消除锯齿
+    mask_img = mask_img.filter(ImageFilter.GaussianBlur(radius=1.5))
+    
+    # 将处理好的 Alpha 通道应用回原图
+    r, g, b, a = img.split()
+    img_transparent = Image.merge('RGBA', (r, g, b, mask_img))
+
+    # 切割逻辑保持不变
+    width, height = img.size
+    cell_width = width // 3
+    cell_height = height // 3
+    
+    count = 0
+    for r in range(3):
+        for c in range(3):
+            left = c * cell_width
+            top = r * cell_height
+            right = left + cell_width
+            bottom = top + cell_height
+            
+            cell = img_transparent.crop((left, top, right, bottom))
+            
+            output_filename = f"cloud_{count}.png"
+            output_path = os.path.join(output_dir, output_filename)
+            cell.save(output_path)
+            print(f"Saved {output_path}")
+            count += 1
+            
+    print("Smart split done!")
+
+if __name__ == "__main__":
+    split_cloud_smart()
diff --git a/web/src/components/game/CloudLayer.vue b/web/src/components/game/CloudLayer.vue
new file mode 100644
index 0000000..95d2aa8
--- /dev/null
+++ b/web/src/components/game/CloudLayer.vue
@@ -0,0 +1,204 @@
+<script setup lang="ts">
+import { ref, onMounted, onUnmounted, watch } from 'vue'
+import { Container, Sprite, Ticker } from 'pixi.js'
+import { useTextures } from './composables/useTextures'
+import { useWorldStore } from '../../stores/world'
+
+const props = defineProps<{
+  width: number
+  height: number
+}>()
+
+const { textures } = useTextures()
+const worldStore = useWorldStore()
+const container = ref<Container>()
+
+interface Cloud {
+  sprite: Sprite
+  shadow: Sprite
+  speedX: number
+  speedY: number
+}
+
+const activeClouds = ref<Cloud[]>([])
+let ticker: Ticker | null = null
+
+// Config mappings
+const MAX_CLOUDS = {
+  'none': 0,
+  'low': 1,
+  'high': 5
+}
+const SPAWN_CHANCE = 0.01 // 稍微提高生成检测频率，因为有最大数量限制
+
+function getCloudFreq() {
+  const freq = worldStore.frontendConfig.cloud_freq || 'none'
+  return freq as keyof typeof MAX_CLOUDS
+}
+
+/**
+ * Spawn a single cloud
+ * @param initial If true, spawn anywhere on screen. If false, spawn off-screen (left).
+ */
+function spawnCloud(initial: boolean = false) {
+  const freq = getCloudFreq()
+  const max = MAX_CLOUDS[freq] || 0
+  
+  if (activeClouds.value.length >= max) return
+
+  // 1. Pick random texture
+  const cloudIdx = Math.floor(Math.random() * 9) // 0-8
+  const tex = textures.value[`cloud_${cloudIdx}`]
+  if (!tex) return
+
+  // 2. Create Cloud Sprite
+  const sprite = new Sprite(tex)
+  sprite.anchor.set(0.5)
+  
+  // Scale
+  const scale = 2.0 + Math.random() * 2.0 // 2.0 - 4.0
+  sprite.scale.set(scale)
+  
+  // Alpha & Tint (More transparent, slightly white/blueish)
+  sprite.alpha = 0.55 + Math.random() * 0.15 // 0.55 - 0.7
+  
+  // 3. Create Shadow Sprite (For height effect)
+  const shadow = new Sprite(tex)
+  shadow.anchor.set(0.5)
+  shadow.scale.set(scale) // Same scale
+  shadow.tint = 0x000000  // Black
+  shadow.alpha = 0.3      // Faint shadow
+  
+  // 4. Determine Position & Speed
+  // Main wind direction: Left to Right (West to East)
+  const speedX = 0.3 + Math.random() * 0.4  // 0.3 - 0.7
+  const speedY = (Math.random() - 0.5) * 0.1 // Slight vertical drift
+  
+  let x, y
+  const margin = 200
+  
+  if (initial) {
+    // Random anywhere
+    x = Math.random() * props.width
+    y = Math.random() * props.height
+  } else {
+    // Start from Left (off-screen)
+    x = -margin - Math.random() * 100
+    y = Math.random() * props.height
+  }
+  
+  // Apply position
+  sprite.x = x
+  sprite.y = y
+  
+  // Shadow offset (simulate height)
+  // Higher offset = Higher altitude perception
+  // With larger scale, we need larger offset to maintain the "height" illusion relative to cloud size
+  const shadowOffsetX = 40 * scale
+  const shadowOffsetY = 60 * scale
+  
+  shadow.x = x + shadowOffsetX
+  shadow.y = y + shadowOffsetY
+
+  if (container.value) {
+    // Add shadow first so it's below the cloud
+    container.value.addChild(shadow)
+    container.value.addChild(sprite)
+    activeClouds.value.push({ sprite, shadow, speedX, speedY })
+  }
+}
+
+function updateClouds(dt: number) {
+  const bounds = { w: props.width, h: props.height }
+  const margin = 300 // Wider margin for cleanup
+  
+  for (let i = activeClouds.value.length - 1; i >= 0; i--) {
+    const cloud = activeClouds.value[i]
+    
+    // Move Cloud
+    cloud.sprite.x += cloud.speedX * dt
+    cloud.sprite.y += cloud.speedY * dt
+    
+    // Move Shadow (Keep offset)
+    // Re-calculate offset based on scale to keep it simple, or just apply delta
+    cloud.shadow.x += cloud.speedX * dt
+    cloud.shadow.y += cloud.speedY * dt
+    
+    // Boundary Check (Only check Right side since we move Right)
+    if (cloud.sprite.x > bounds.w + margin || 
+        cloud.sprite.y > bounds.h + margin || 
+        cloud.sprite.y < -margin) {
+          
+      // Remove
+      if (container.value) {
+        container.value.removeChild(cloud.sprite)
+        container.value.removeChild(cloud.shadow)
+      }
+      activeClouds.value.splice(i, 1)
+    }
+  }
+
+  // Try spawn
+  if (Math.random() < SPAWN_CHANCE) {
+    spawnCloud(false) // Spawn from edge
+  }
+}
+
+function startTicker() {
+  if (ticker) return
+  ticker = new Ticker()
+  ticker.add((t) => updateClouds(t.deltaTime))
+  ticker.start()
+  
+  // Initial population if empty
+  if (activeClouds.value.length === 0) {
+    const freq = getCloudFreq()
+    const max = MAX_CLOUDS[freq] || 0
+    // Spawn a few initial clouds randomly placed
+    for (let i = 0; i < max; i++) {
+       spawnCloud(true)
+    }
+  }
+}
+
+function stopTicker() {
+  if (ticker) {
+    ticker.stop()
+    ticker.destroy()
+    ticker = null
+  }
+}
+
+function clearClouds() {
+  if (container.value) {
+    container.value.removeChildren()
+  }
+  activeClouds.value = []
+}
+
+watch(() => worldStore.frontendConfig.cloud_freq, (val) => {
+  const freq = val || 'none'
+  if (freq === 'none') {
+    clearClouds()
+    stopTicker()
+  } else {
+    startTicker()
+  }
+}, { immediate: true })
+
+onMounted(() => {
+  if (getCloudFreq() !== 'none') {
+    startTicker()
+  }
+})
+
+onUnmounted(() => {
+  stopTicker()
+})
+
+</script>
+
+<template>
+  <!-- z-index 300 should be above entities (usually < 100) and map -->
+  <container ref="container" :z-index="300" />
+</template>
diff --git a/web/src/components/game/GameCanvas.vue b/web/src/components/game/GameCanvas.vue
index 3169f2d..8885193 100644
--- a/web/src/components/game/GameCanvas.vue
+++ b/web/src/components/game/GameCanvas.vue
@@ -5,6 +5,7 @@ import { useElementSize } from '@vueuse/core'
 import Viewport from './Viewport.vue'
 import MapLayer from './MapLayer.vue'
 import EntityLayer from './EntityLayer.vue'
+import CloudLayer from './CloudLayer.vue'
 import { useTextures } from './composables/useTextures'
 
 const container = ref<HTMLElement>()
@@ -71,6 +72,7 @@ onMounted(() => {
           @regionSelected="handleRegionSelected" 
         />
         <EntityLayer @avatarSelected="handleAvatarSelected" />
+        <CloudLayer :width="mapSize.width" :height="mapSize.height" />
       </Viewport>
     </Application>
   </div>
diff --git a/web/src/components/game/composables/useTextures.ts b/web/src/components/game/composables/useTextures.ts
index 9e028d7..e0c6b8a 100644
--- a/web/src/components/game/composables/useTextures.ts
+++ b/web/src/components/game/composables/useTextures.ts
@@ -71,6 +71,16 @@ export function useTextures() {
       }
     })
 
+    // Load Clouds
+    const cloudPromises: Promise<void>[] = []
+    for (let i = 0; i <= 8; i++) {
+        cloudPromises.push(
+            Assets.load(`/assets/clouds/cloud_${i}.png`)
+                .then(tex => { textures.value[`cloud_${i}`] = tex })
+                .catch(e => console.warn(`Failed cloud_${i}`, e))
+        )
+    }
+
     // Load Avatars based on available IDs
     const avatarPromises: Promise<void>[] = []
     
@@ -90,7 +100,7 @@ export function useTextures() {
         )
     }
 
-    await Promise.all([...tilePromises, ...avatarPromises])
+    await Promise.all([...tilePromises, ...avatarPromises, ...cloudPromises])
 
     isLoaded.value = true
     console.log('Base textures loaded')
diff --git a/web/src/stores/world.ts b/web/src/stores/world.ts
index 66645a4..0991ed7 100644
--- a/web/src/stores/world.ts
+++ b/web/src/stores/world.ts
@@ -21,6 +21,7 @@ export const useWorldStore = defineStore('world', () => {
   const regions = shallowRef<Map<string | number, RegionSummary>>(new Map());
   
   const isLoaded = ref(false);
+  const frontendConfig = ref<Record<string, any>>({});
   
   const currentPhenomenon = ref<CelestialPhenomenon | null>(null);
   const phenomenaList = shallowRef<CelestialPhenomenon[]>([]);
@@ -103,6 +104,9 @@ export const useWorldStore = defineStore('world', () => {
       ]);
 
       mapData.value = mapRes.data;
+      if (mapRes.config) {
+        frontendConfig.value = mapRes.config;
+      }
       const regionMap = new Map();
       mapRes.regions.forEach(r => regionMap.set(r.id, r));
       regions.value = regionMap;
@@ -162,6 +166,7 @@ export const useWorldStore = defineStore('world', () => {
     mapData,
     regions,
     isLoaded,
+    frontendConfig,
     currentPhenomenon,
     phenomenaList,
     
diff --git a/web/src/types/api.ts b/web/src/types/api.ts
index b4c0c4a..46720ed 100644
--- a/web/src/types/api.ts
+++ b/web/src/types/api.ts
@@ -51,6 +51,10 @@ export interface MapResponseDTO {
     type: string;
     sect_name?: string;
   }>;
+  config?: {
+    water_speed?: string;
+    cloud_freq?: string;
+  };
 }
 
 export interface HoverResponseDTO {