diff --git a/README.md b/README.md
index d02aa0c..b1714aa 100644
--- a/README.md
+++ b/README.md
@@ -6,51 +6,49 @@
 
 ### 1.基础部分
 
-- [x] [const那些事](./basic_content/const)
-- [x] [static那些事](./basic_content/static)
-- [x] [this那些事](./basic_content/this)
-- [x] [inline那些事](./basic_content/inline)
-- [x] [sizeof那些事](./basic_content/sizeof)
-- [x] [函数指针那些事](./basic_content/func_pointer)
-- [x] [纯虚函数和抽象类那些事](./basic_content/abstract)
-- [x] [vptr_vtable那些事](./basic_content/vptr_vtable)
-- [x] [virtual那些事](./basic_content/virtual)
-- [x] [volatile那些事](./basic_content/volatile)
-- [x] [assert那些事](./basic_content/assert)
-- [x] [位域那些事](./basic_content/bit)
-- [x] [extern那些事](./basic_content/extern)
-- [x] [struct那些事](./basic_content/struct)
-- [x] [struct与class那些事](./basic_content/struct_class)
-- [x] [union那些事](./basic_content/union)
-- [x] [c实现c++多态那些事](./basic_content/c_poly)
-- [x] [explicit那些事](./basic_content/explicit)
-- [x] [friend那些事](./basic_content/friend)
-- [x] [using那些事](./basic_content/using)
-- [x] [::那些事](./basic_content/::)
-- [x] [enum那些事](./basic_content/enum)
-- [x] [decltype那些事](./basic_content/decltype)
-- [x] [引用与指针那些事](./basic_content/pointer_refer)
-- [x] [宏那些事](./basic_content/macro)
+- [const那些事](./basic_content/const)
+- [static那些事](./basic_content/static)
+- [this那些事](./basic_content/this)
+- [inline那些事](./basic_content/inline)
+- [sizeof那些事](./basic_content/sizeof)
+- [函数指针那些事](./basic_content/func_pointer)
+- [纯虚函数和抽象类那些事](./basic_content/abstract)
+- [vptr_vtable那些事](./basic_content/vptr_vtable)
+- [virtual那些事](./basic_content/virtual)
+- [volatile那些事](./basic_content/volatile)
+- [assert那些事](./basic_content/assert)
+- [位域那些事](./basic_content/bit)
+- [extern那些事](./basic_content/extern)
+- [struct那些事](./basic_content/struct)
+- [struct与class那些事](./basic_content/struct_class)
+- [union那些事](./basic_content/union)
+- [c实现c++多态那些事](./basic_content/c_poly)
+- [explicit那些事](./basic_content/explicit)
+- [friend那些事](./basic_content/friend)
+- [using那些事](./basic_content/using)
+- [::那些事](./basic_content/::)
+- [enum那些事](./basic_content/enum)
+- [decltype那些事](./basic_content/decltype)
+- [引用与指针那些事](./basic_content/pointer_refer)
+- [宏那些事](./basic_content/macro)
 
 ### 2.进阶部分 
 
-#### 2.1 effective_c++
+#### 2.1 [effective_c++](./effective_c++)
 
 正在更新...
 
-#### 2.2 C++2.0新特性
+#### 2.2 [C++2.0新特性](./c++2.0)
 
 正在更新...
 
-#### 2.3 C++并发编程v1
+#### 2.3 [C++并发编程v1](./concurrency_v1)
 
 - [第一章](./concurrency_v1/chapter1)
 - [第二章](./concurrency_v1/chapter2)
 
 学习资料：https://chenxiaowei.gitbook.io/cpp_concurrency_in_action/
 
-
-
 ### 3.代码运行
 
 代码运行：