diff --git a/docs/en/quick_start/m5core/m5stack_core_get_started_Arduino_Windows.md b/docs/en/quick_start/m5core/m5stack_core_get_started_Arduino_Windows.md
index 8fbc1aeb..644e7449 100644
--- a/docs/en/quick_start/m5core/m5stack_core_get_started_Arduino_Windows.md
+++ b/docs/en/quick_start/m5core/m5stack_core_get_started_Arduino_Windows.md
@@ -26,7 +26,7 @@ Open Arduino IDE, and click `File`->`Peferences`->`Settings`
Input last esp32 board manager URL
-Now the last board manager URL: http://https//dl.espressif.com/dl/package_esp32_index.json"
+*Now the last board manager URL: "http://https//dl.espressif.com/dl/package_esp32_index.json"*
diff --git a/docs/ja/quick_start/m5core/m5stack_core_get_started_Arduino_Windows.md b/docs/ja/quick_start/m5core/m5stack_core_get_started_Arduino_Windows.md
index 98893791..dfd48110 100644
--- a/docs/ja/quick_start/m5core/m5stack_core_get_started_Arduino_Windows.md
+++ b/docs/ja/quick_start/m5core/m5stack_core_get_started_Arduino_Windows.md
@@ -27,7 +27,7 @@ Arduino IDEを起動し、メニューか`File`->`Peferences`->`Settings`
このオプションに最新のESP32ボード管理URLを追加してください`Additional Boards Manager URLs: `
-*最新の掲示板管理URLはこちら："http://https//dl.espressif.com/dl/package_esp32_index.json"*
+*最新の掲示板管理URLはこちら："https//dl.espressif.com/dl/package_esp32_index.json"*
diff --git a/docs/zh_CN/base/plc_base.md b/docs/zh_CN/base/plc_base.md
index a46421b2..9df94a1a 100644
--- a/docs/zh_CN/base/plc_base.md
+++ b/docs/zh_CN/base/plc_base.md
@@ -8,8 +8,8 @@
## 描述
-The M5Stack PLC Module is a prototye industrial board, including RS484
-adapter and electricity meter module.
+**PLC** is a prototye industrial board,
+这个底座还集成了**电流传感器**和 **RS485 转接板**。支持9-24V的输入
With DC9~24V power input, PLC-Proto motherboard reserved 6Pin or 4Pin
relay output, digital input, communication interface etc.
@@ -17,9 +17,8 @@ relay output, digital input, communication interface etc.
## 特性
- Free DIY
-- Programmable Logic Controller
- Individual package weight: 0.1kg (0.22lb.)
-- Package size: 5cm \* 5cm \* 5cm (1.97in \* 1.97in \* 1.97in)
+- 尺寸: 5cm \* 5cm \* 5cm (1.97in \* 1.97in \* 1.97in)
## 包含
@@ -32,11 +31,10 @@ relay output, digital input, communication interface etc.
- 1x 4 Pin 3.96H 接线端子
- 3x 六角扳手
- 7x 螺丝（三种型号：M2x4，M3x6，M3x18）
-- 1x Sticker
+- 1x 贴纸
## 应用
-- Programmable Logic Controller
- Programmable Motion Controller
- Digital Operation Processor
- Strong Electric Controller
diff --git a/docs/zh_CN/quick_start/m5core/m5stack_core_get_started_Arduino_MacOS.md b/docs/zh_CN/quick_start/m5core/m5stack_core_get_started_Arduino_MacOS.md
index 6077e8f4..42b63816 100644
--- a/docs/zh_CN/quick_start/m5core/m5stack_core_get_started_Arduino_MacOS.md
+++ b/docs/zh_CN/quick_start/m5core/m5stack_core_get_started_Arduino_MacOS.md
@@ -35,7 +35,7 @@
复制下面最新的ESP32板管理网址到`Additional Boards Manager URLs: `选项中
-*目前最新的板管理网址是这个："http://https//dl.espressif.com/dl/package_esp32_index.json"*
+*目前最新的板管理网址是这个："https//dl.espressif.com/dl/package_esp32_index.json"*
diff --git a/docs/zh_CN/quick_start/m5core/m5stack_core_get_started_Arduino_Windows.md b/docs/zh_CN/quick_start/m5core/m5stack_core_get_started_Arduino_Windows.md
index 803c0f55..0101ed70 100644
--- a/docs/zh_CN/quick_start/m5core/m5stack_core_get_started_Arduino_Windows.md
+++ b/docs/zh_CN/quick_start/m5core/m5stack_core_get_started_Arduino_Windows.md
@@ -25,7 +25,7 @@
复制下面最新的ESP32板管理网址到 `Additional Boards Manager URLs: `中
-目前最新的板管理网址是这个："http://https//dl.espressif.com/dl/package_esp32_index.json"
+目前最新的板管理网址是这个："https//dl.espressif.com/dl/package_esp32_index.json"