diff --git a/docs/assets/img/product_pics/app/lidarbot_04.jpg b/docs/assets/img/product_pics/app/lidarbot_04.jpg
index 5d1f7a10..92cec010 100644
Binary files a/docs/assets/img/product_pics/app/lidarbot_04.jpg and b/docs/assets/img/product_pics/app/lidarbot_04.jpg differ
diff --git a/docs/en/app/lidarbot.md b/docs/en/app/lidarbot.md
index 5a280bb5..2e9b85b4 100644
--- a/docs/en/app/lidarbot.md
+++ b/docs/en/app/lidarbot.md
@@ -35,7 +35,7 @@ And in addition to controlling the car's flexible front, rear, left and right mo
 | ServoMotor0 | 0xAF,Angle(0 ~ 180),0x55|0xAF, 100, 0x55(Servo 0 turns angle 100 degree)|setServo0Angle(100)|
 | ServoMotor1 | 0xB0,Angle(0 ~ 180),0x55|0xB0, 100, 0x55(Servo 1 turns angle 100 degree)|setServo1Angle(100)|
 
-<img src="assets/img/product_pics/app/lidarbot_04.jpg" width="300" height="300">
+<img src="assets/img/product_pics/app/lidarbot_04.jpg" width=60% height=60%>
 
 ## PARAMETER
 
diff --git a/docs/ja/app/lidarbot.md b/docs/ja/app/lidarbot.md
index 088ad72a..22db0510 100644
--- a/docs/ja/app/lidarbot.md
+++ b/docs/ja/app/lidarbot.md
@@ -36,7 +36,7 @@ ESP-NOWを利用したリアルタイム通信により、リモコンでLidarBO
 | ServoMotor0 | 0xAF,Angle(0 ~ 180),0x55|0xAF, 100, 0x55(Servo 0 turns angle 100 degree)|setServo0Angle(100)|
 | ServoMotor1 | 0xB0,Angle(0 ~ 180),0x55|0xB0, 100, 0x55(Servo 1 turns angle 100 degree)|setServo1Angle(100)|
 
-<img src="assets/img/product_pics/app/lidarbot_04.jpg" width="300" height="300">
+<img src="assets/img/product_pics/app/lidarbot_04.jpg" width=60% height=60%>
 
 ## 仕様
 
diff --git a/docs/zh_CN/app/lidarbot.md b/docs/zh_CN/app/lidarbot.md
index e9954b70..0371c29a 100644
--- a/docs/zh_CN/app/lidarbot.md
+++ b/docs/zh_CN/app/lidarbot.md
@@ -34,7 +34,7 @@
 | 控制舵机 0        | 0xAF,Angle(0 ~ 180),0x55                       |0xAF, 100, 0x55(舵机0转动100度)|setServo0Angle(100)|
 | 控制舵机 1        | 0xB0,Angle(0 ~ 180),0x55                       |0xB0, 100, 0x55(舵机1转动100度)|setServo1Angle(100)|
 
-<img src="assets/img/product_pics/app/lidarbot_04.jpg" width="300" height="300">
+<img src="assets/img/product_pics/app/lidarbot_04.jpg" width=60% height=60%>
 
 ## 参数
 
diff --git a/docs/zh_CN/core/m5stick.md b/docs/zh_CN/core/m5stick.md
index e72bb7e1..b373c5c7 100644
--- a/docs/zh_CN/core/m5stick.md
+++ b/docs/zh_CN/core/m5stick.md
@@ -7,6 +7,7 @@
 
 :memo:**[描述](#描述)**&nbsp;&nbsp;&nbsp;:bulb:**[上手指南](zh_CN/quick_start/m5stick/m5stick_quick_start)**&nbsp;&nbsp;&nbsp;:octocat:**[例程](#例程)**&nbsp;&nbsp;&nbsp;:electric_plug:**[原理图](#原理图)**&nbsp;&nbsp;&nbsp;🛒**[购买链接](https://item.taobao.com/item.htm?spm=a1z10.3-c.w4002-1172588106.11.257b425esTi92S&id=581055502939)**
 
+0//
 <!-- &nbsp;&nbsp;&nbsp;:clapper:**[相关视频](#相关视频)** -->
 
 ## 描述
diff --git a/docs/zh_CN/unit/finger.md b/docs/zh_CN/unit/finger.md
index 91f855ac..41d26923 100644
--- a/docs/zh_CN/unit/finger.md
+++ b/docs/zh_CN/unit/finger.md
@@ -32,6 +32,8 @@
 
 - **[官方论坛](http://forum.m5stack.com/)**
 
+- **[FINGER 的通信协议](https://github.com/m5stack/M5-Schematic/blob/master/Units/finger/biovo_fingerprint_Protocol_zh_CN.DOC)**
+
 <!-- ## 例程
 
 ### 1. Arduino IDE -->