diff --git a/docs/en/core/basic.md b/docs/en/core/basic.md
index 63836a04..fbf3558f 100644
--- a/docs/en/core/basic.md
+++ b/docs/en/core/basic.md
@@ -10,7 +10,7 @@
**The M5Stack BASIC** is a black development kit based on **ESP32** chip composed of a black M5Core and a Bottom Base board. You can even program The M5Stack BASIC through Blockly, Arduino or MicroPython. The black core is a basic kit and **it does not own any MEMS chip(like MPU9250...)**.
-There is a Bottom board on the back of M5Core. It's designed for expanding gpio on M-Bus besides I2S Pins(GPIO0, GPIO12, GPIO13, GPIO15, GPIO34)for DIY. Each gpio on M-Bus is expanded as pin and port for convenience and flexibility.
+This is a [Bottom board](en/base/core_bottom) on the back of M5Core. It's designed for expanding gpio on M-Bus besides I2S Pins(GPIO0, GPIO12, GPIO13, GPIO15, GPIO34)for DIY. Each gpio on M-Bus is expanded as pin and port for convenience and flexibility.

diff --git a/docs/en/core/gray.md b/docs/en/core/gray.md
index 91868fe4..4552bb89 100644
--- a/docs/en/core/gray.md
+++ b/docs/en/core/gray.md
@@ -12,9 +12,9 @@
**M5Core GRAY** is a development kit based on ESP32 chip composed of a gray M5Core and a Bottom Base board. You can even program The M5Core GRAY through Blockly, Arduino or MicroPython.
-The M5Core GRAY equips the ESP32 with everything necessary to program, run and develop on the wonderchip. It also features a MEMS Chip(**MPU9250**), and a TF `T LCD, so you can create a 3D remote gesture controller, a simple "Leap Motion" via M5Core GRAY in a day in stead of couple weeks and so on.
+The M5Core GRAY equips the ESP32 with everything necessary to program, run and develop on the wonderchip. It also features a MEMS Chip(**MPU9250**), and a TFT LCD, so you can create a 3D remote gesture controller, a simple "Leap Motion" via M5Core GRAY in a day in stead of couple weeks and so on.
-The a Bottom board on the back of M5Core. It's designed for expanding gpio on M-Bus besides I2S Pins(GPIO0, GPIO12, GPIO13, GPIO15, GPIO34)for DIY. Each gpio on M-Bus is expanded as pin and port for convenience and flexibility.
+This is a [Bottom board](en/base/core_bottom) on the back of M5Core. It's designed for expanding gpio on M-Bus besides I2S Pins(GPIO0, GPIO12, GPIO13, GPIO15, GPIO34)for DIY. Each gpio on M-Bus is expanded as pin and port for convenience and flexibility.
## Feature
diff --git a/docs/en/core/m5go.md b/docs/en/core/m5go.md
index 13f97289..922945f9 100644
--- a/docs/en/core/m5go.md
+++ b/docs/en/core/m5go.md
@@ -10,7 +10,7 @@
## Description
-**M5GO IOT Starter Kit** is a kit designed for learning IOT programming which consists of 6 units(ENV, IR, RGB, PIR, ANGLE, HUB) and one white M5Core(based on ESP32 chip).
+**M5GO IOT Starter Kit** is a kit designed for learning IOT programming which consists of 6 units(ENV, IR, RGB, PIR, ANGLE, HUB), one white M5Core(based on ESP32 chip) and a [M5GO bottom](en/base/m5go_bottom).
Programming M5GO with [UiFlow](http://flow.m5stack.com) or Arduino IDE.
diff --git a/docs/en/core/m5go_lite.md b/docs/en/core/m5go_lite.md
index 6c37b962..fb9b631f 100644
--- a/docs/en/core/m5go_lite.md
+++ b/docs/en/core/m5go_lite.md
@@ -13,7 +13,7 @@
## 描述
-**M5GO Lite** is a small kit which consists of one **ENV unit** and a **white M5Core**(based on ESP32 chip). It's a simple version of [M5GO IOT Starter Kit](en/core/m5go_iot_starter_kit).
+**M5GO Lite** is a small kit which consists of one **ENV unit**, a **white M5Core**(based on ESP32 chip) and a [M5GO bottom](en/base/m5go_bottom). It's a simple version of [M5GO IOT Starter Kit](en/core/m5go_iot_starter_kit).
You can program M5GO Lite with [UiFlow](http://flow.m5stack.com) or Arduino IDE.
diff --git a/docs/zh_CN/core/basic.md b/docs/zh_CN/core/basic.md
index c3cdd7ff..496afe5c 100644
--- a/docs/zh_CN/core/basic.md
+++ b/docs/zh_CN/core/basic.md
@@ -10,7 +10,7 @@
## 描述
-**M5Core BASIC** 是一款基于 **ESP32** 芯片(集成 Wi-Fi 和蓝牙)的基础版开发板,包括黑色的主板和底座。你可以用 [UiFlow](http://flow.m5stack.com), [MicroPython](http://micropython.org/) 或 [Arduino](http://www.arduino.cc) 来编程它.
+**M5Core BASIC** 是一款基于 **ESP32** 芯片(集成 Wi-Fi 和蓝牙)的基础版开发板,包括黑色的主板和[底座](zh_CN/base/core_bottom)。你可以用 [UiFlow](http://flow.m5stack.com), [MicroPython](http://micropython.org/) 或 [Arduino](http://www.arduino.cc) 来编程它.
这个黑色主板包含 3 个按键、喇叭、LCD (320x240)、 TF 卡插槽。底座的设计用于拓展 M-Bus 总线的Pin 管脚出来,以方便 DIY 和产品设计,每个 Pin 脚都引出来做成了排针或排母形式,非常方便 (GPIO0, GPIO12, GPIO13, GPIO15, GPIO34 这几个关于 I2S 功能的引脚没引出)。
diff --git a/docs/zh_CN/core/gray.md b/docs/zh_CN/core/gray.md
index 737cb0ae..dad028ef 100644
--- a/docs/zh_CN/core/gray.md
+++ b/docs/zh_CN/core/gray.md
@@ -14,7 +14,7 @@
这个灰色主板包含3个按键、喇叭、LCD(320x240)、TF卡插槽、九轴陀螺仪MPU9250。
-底座的设计用于拓展M-Bus总线的Pin管脚出来,以方便DIY和产品设计,每个Pin脚都引出来做成了排针或排母形式,非常方便(GPIO0, GPIO12, GPIO13, GPIO15, GPIO34这几个关于I2S功能的引脚没引出)。
+[底座](zh_CN/base/core_bottom)的设计用于拓展M-Bus总线的Pin管脚出来,以方便DIY和产品设计,每个Pin脚都引出来做成了排针或排母形式,非常方便(GPIO0, GPIO12, GPIO13, GPIO15, GPIO34这几个关于I2S功能的引脚没引出)。
## 特性
diff --git a/docs/zh_CN/core/m5go.md b/docs/zh_CN/core/m5go.md
index b4503a6b..8d538f4e 100644
--- a/docs/zh_CN/core/m5go.md
+++ b/docs/zh_CN/core/m5go.md
@@ -10,7 +10,7 @@
## 描述
-**M5GO IOT Starter Kit** 是一款以白色 M5Core 主控为核心,附带 6个units(ENV, IR, RGB, PIR, ANGLE, HUB) 的物联网开发套件。
+**M5GO IOT Starter Kit** 是一款以白色 M5Core 主控为核心,附带 6个units(ENV, IR, RGB, PIR, ANGLE, HUB) 和 [M5GO 底座](zh_CN/base/m5go_bottom)的物联网开发套件。
你可以用 [UiFlow](http://flow.m5stack.com) 或 Arduino IDE 对它编程。
diff --git a/docs/zh_CN/core/m5go_lite.md b/docs/zh_CN/core/m5go_lite.md
index 04eb5883..5c0283ce 100644
--- a/docs/zh_CN/core/m5go_lite.md
+++ b/docs/zh_CN/core/m5go_lite.md
@@ -13,7 +13,7 @@
## 描述
-**M5GO Lite** 是一款以白色 M5Core 主控为核心,附带1个 **ENV unit** 的物联网开发套件。它是 [M5GO IOT Starter Kit](zh_CN/core/m5go_iot_starter_kit) 的简单版本。
+**M5GO Lite** 是一款以白色 M5Core 主控为核心,附带1个 **ENV unit** 和 [M5GO 底座](zh_CN/base/m5go_bottom)的物联网开发套件。它是 [M5GO IOT Starter Kit](zh_CN/core/m5go_iot_starter_kit) 的简单版本。
你可以用 [UiFlow](http://flow.m5stack.com) 或 Arduino IDE 对它编程。