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diff --git a/docs/en/unit/op180.md b/docs/en/unit/op180.md
index 78c10bbe..41f3c277 100644
--- a/docs/en/unit/op180.md
+++ b/docs/en/unit/op180.md
@@ -35,7 +35,7 @@ The actuator of this Unit is consist of a pair of IR part, emitter side and rece
 
 ## Schematic
 
-<img src="assets/img/product_pics/unit/op90/unit_op180_04.webp">
+<img src="assets/img/product_pics/unit/op180/unit_op180_04.webp">
 
 ## EasyLoader
 
diff --git a/docs/en/unit/unit_fan.md b/docs/en/unit/unit_fan.md
index 6abf7542..ac0ebd27 100644
--- a/docs/en/unit/unit_fan.md
+++ b/docs/en/unit/unit_fan.md
@@ -2,14 +2,14 @@
 
 <div class="badge badge-pill badge-primary product_sku_tag">SKU:U063</div>
 
-<div class="product_pic"><img src="assets/img/product_pics/unit/Fan/unit_fan_01.webp"><img src="assets/img/product_pics/unit/Fan/unit_fan_02.webp"></div>
+<div class="product_pic"><img src="assets/img/product_pics/unit/fan/unit_fan_01.webp"><img src="assets/img/product_pics/unit/fan/unit_fan_02.webp"></div>
 
 ## Description
 
 **FAN** is designed with an N20 Motor and a small fan piece is included in the package.
 This N20 motor is has a 5V supply voltage. The output shaft has a rotational speed of 8800 RPM.
 
-<img src="assets/img/product_pics/unit/Fan/unit_fan_03.webp" width="30%" height="30%">
+<img src="assets/img/product_pics/unit/fan/unit_fan_03.webp" width="30%" height="30%">
 
 ### Product Features
 - single-direction rotation
@@ -31,7 +31,7 @@ This N20 motor is has a 5V supply voltage. The output shaft has a rotational spe
 
 ## Schematic
 
-<img src="assets/img/product_pics/unit/Fan/unit_fan_04.webp">
+<img src="assets/img/product_pics/unit/fan/unit_fan_04.webp">
 
 ## EasyLoader
 
@@ -55,7 +55,7 @@ To get complete code, please click [here](https://github.com/m5stack/M5Stack/tre
 
 To get complete code, please click [here](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Unit/FAN/UIFlow)
 
-<img src="assets/img/product_pics/unit/fan.webp" >
+<img src="assets/img/product_pics/unit/fan/fan.webp" width="50%" height="50%">
 
 <script>
 
diff --git a/docs/zh_CN/unit/unit_fan.md b/docs/zh_CN/unit/unit_fan.md
index ac49995a..ae1b3073 100644
--- a/docs/zh_CN/unit/unit_fan.md
+++ b/docs/zh_CN/unit/unit_fan.md
@@ -2,13 +2,13 @@
 
 <div class="badge badge-pill badge-primary product_sku_tag">SKU:U063</div>
 
-<div class="product_pic"><img src="assets/img/product_pics/unit/Fan/unit_fan_01.webp"><img src="assets/img/product_pics/unit/Fan/unit_fan_02.webp"></div>
+<div class="product_pic"><img src="assets/img/product_pics/unit/fan/unit_fan_01.webp"><img src="assets/img/product_pics/unit/fan/unit_fan_02.webp"></div>
 
 ## 描述
 
 **FAN** 是一款直流电机的Unit, 采用N20直流电机制作， 输出轴的转速为8800 RPM（无负载）. 利用其单向旋转的特性，可以将其运用在一些需要进行运动控制的结构中充当动力源. 例如，控制车轮转动.
 
-<img src="assets/img/product_pics/unit/Fan/unit_fan_03.webp" width="30%" height="30%">
+<img src="assets/img/product_pics/unit/fan/unit_fan_03.webp" width="30%" height="30%">
 
 ## 产品特性
 
@@ -27,7 +27,7 @@
 
 ## 原理图
 
-<img src="assets/img/product_pics/unit/Fan/unit_fan_04.webp" width="50%" height="50%">
+<img src="assets/img/product_pics/unit/fan/unit_fan_04.webp" width="50%" height="50%">
 
 ## EasyLoader
 
@@ -49,7 +49,7 @@
 
 ### 2. UIFlow
 
-<img src="assets/img/product_pics/unit/Fan/fan.webp" width="50%" height="50%">
+<img src="assets/img/product_pics/unit/fan/fan.webp" width="50%" height="50%">
 
 [点击此处获取UIFLow示例](https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Unit/FAN)