docs: add keywords concepts

src/.vuepress/sidebar/en.ts

@@ -11,7 +11,14 @@ export const enSidebar = sidebar({
           text: "Concepts",
           icon: "solar:book-outline",
           prefix: "concepts/",
-          children: "structure"
+          children: [
+            {
+              text: "Golang",
+              icon: "fa6-brands:golang",
+              prefix: "golang/",
+              children: "structure",
+            }
+          ]
         }, 
         {
           text: "Golang",

src/.vuepress/sidebar/zh.ts

@@ -11,7 +11,14 @@ export const zhSidebar = sidebar({
           text: "必学概念",
           icon: "solar:book-outline",
           prefix: "concepts/",
-          children: "structure"
+          children: [
+            {
+              text: "Golang",
+              icon: "fa6-brands:golang",
+              prefix: "golang/",
+              children: "structure",
+            }
+          ]
         },
         {
           text: "Golang",

src/guide/concepts/golang/1-basic.md

@@ -0,0 +1,41 @@
+---
+order: 1
+title: 'Keywords'
+---
+
+## Keywords
+
+Golang has 25 reserved keywords that cannot be used as program identifiers.
+
+| Type               | Keywords                                                                                                      | Introduction                                                      |
+| ------------------ | ------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------- |
+| Declaration        | `const`  `func` `import`  `package`  `type` `var`                                                             | These keywords are used to declare various elements in the code.  |
+| Compound Types     | `chan` `interface` `map` `struct`                                                                             | These keywords are used to declare some special compound types.   |
+| Flow Control       | `break` `case` `continue` `default` `else` `fallthrough` `for` `goto` `if` `range` `return` `select` `switch` | These keywords are used to control the flow of program execution. |
+| Function Modifiers | `defer` `go`                                                                                                  | Used to modify special functions.                                 |
+
+## Declaration Type Keywords
+
+### **const**
+
+`const` is used to declare constants, which once declared cannot be changed, and must specify an initial value when declaring a constant.
+
+<details>
+<summary>Example</summary>
+
+```go
+const identifier T = value  // T is the data type, which can be omitted, and the compiler will infer it.
+const identifier1, identifier2 = value1, value2 // Declare multiple, such as const a, b, c = "hello", 100, true
+
+const (
+    FeMale = 0
+    Male = 1
+) // Enumeration
+
+const (
+    a = iota
+    b
+    c
+) // iota
+```
+</details>

src/zh/guide/concepts/golang/1-basic.md

@@ -0,0 +1,42 @@
+---
+order: 1
+title: '保留关键字'
+---
+
+##  保留关键字
+
+golang 有 25 个保留的关键字，这些关键字不能用作程序标识符。
+
+| 类型     | 关键字                                                                                                        | 介绍                                 |
+| -------- | ------------------------------------------------------------------------------------------------------------- | ------------------------------------ |
+| 声明     | `const`  `func` `import`  `package`  `type` `var`                                                             | 这些关键字用于声明代码中的各种元素   |
+| 复合类型 | `chan` `interface` `map` `struct`                                                                             | 这些关键字用于声明一些特殊的复合类型 |
+| 流程控制 | `break` `case` `continue` `default` `else` `fallthrough` `for` `goto` `if` `range` `return` `select` `switch` | 这些关键字用于控制程序运行流程       |
+| 功能修饰 | `defer` `go`                                                                                                  | 用于修饰特殊的 function              |
+
+
+## 声明类型关键字
+
+### **const**
+
+const 用于声明常量，常量一经声明就不能被更改，声明常量必须指定初始值。
+
+<details>
+<summary>例子</summary>
+
+```go
+const identifier T = value  // T 为数据类型，可以省略，编译器会自己推断。
+const identifier1, identifier2 = value1, value2 // 声明多个，如 const a, b, c = "hello", 100, true
+
+const (
+    FeMale = 0
+    Male = 1
+) // 枚举
+
+const (
+    a = iota
+    b
+    c
+) // iota
+```
+</details>