diff --git a/README.md b/README.md
index a95edd2..584bbfb 100644
--- a/README.md
+++ b/README.md
@@ -27,17 +27,17 @@ Generates Go classes from predefined objects, embedding assertion logic to preve
 
 Extracts functions from existing code and generates Go packages, integrating assertion and crash handling.
 
-### `cls_stub_gen`: **Generates Go Method Stubs with Assertions**
+### `cls_stub_gen`: **Generates Package-Level Function Wrappers**
 
-Generates method stubs for Go objects, embedding assertions for proper error handling.
+Creates package-level functions that wrap methods of a singleton struct, simplifying access usage.
 
 ## Usage
 
 ### Examples:
 
-- [sure_cls_gen](internal/examples/example_sure_cls_gen)
-- [sure_pkg_gen](internal/examples/example_sure_pkg_gen)
-- [cls_stub_gen](internal/examples/example_cls_stub_gen)
+- [Generating Classes with `sure_cls_gen`](internal/examples/example_sure_cls_gen)
+- [Generating Packages with `sure_pkg_gen`](internal/examples/example_sure_pkg_gen)
+- [Generating Singleton with `cls_stub_gen`](internal/examples/example_cls_stub_gen)
 
 ---
 
diff --git a/README.zh.md b/README.zh.md
index 0d4eff1..906c631 100644
--- a/README.zh.md
+++ b/README.zh.md
@@ -22,15 +22,15 @@
 
 ### `cls_stub_gen`: **生成带有断言的 Go 方法存根**
 
-给 Go 对象生成方法存根，再嵌入断言以确保适当的错误处理。
+给 Go 类型创建封装单例结构体方法的包级函数，简化访问使用。。
 
 ## 使用示例
 
 ### 示例：
 
-- [sure_cls_gen](internal/examples/example_sure_cls_gen)
-- [sure_pkg_gen](internal/examples/example_sure_pkg_gen)
-- [cls_stub_gen](internal/examples/example_cls_stub_gen)
+- [使用 `sure_cls_gen` 生成类](internal/examples/example_sure_cls_gen)
+- [使用 `sure_pkg_gen` 生成包](internal/examples/example_sure_pkg_gen)
+- [使用 `cls_stub_gen` 生成单例](internal/examples/example_cls_stub_gen)
 
 ---
 
diff --git a/cls_stub_gen/stub_gen_test.go b/cls_stub_gen/stub_gen_test.go
index 081b774..42046e1 100644
--- a/cls_stub_gen/stub_gen_test.go
+++ b/cls_stub_gen/stub_gen_test.go
@@ -1,6 +1,7 @@
 package cls_stub_gen
 
 import (
+	"github.com/pkg/errors"
 	"testing"
 
 	"github.com/yyle88/runpath"
@@ -13,7 +14,8 @@ func (a *A) Get() *A {
 	return a
 }
 
-func (a *A) Set(string) {
+func (a *A) Set(string) error {
+	return errors.New("not implement")
 }
 
 func (a *A) Add(x int, y int) int {
@@ -33,7 +35,7 @@ func TestGenerateMethodsStub(t *testing.T) {
 			OutputPath:        "",
 			AllowFileCreation: false,
 		},
-		NewStubParam(A{}, "a_a_a"),
+		NewStubParam(A{}, "singletonInstance"),
 	)
 	t.Log(res)
 }