diff --git a/creation/06_builder/builder.go b/creation/06_builder/builder.go
index 8c99ef9..550f953 100644
--- a/creation/06_builder/builder.go
+++ b/creation/06_builder/builder.go
@@ -1,10 +1,13 @@
 package builder
 
+import "fmt"
+
 //ICar 汽车，我们要造车了
 //ICar 车具有以下能力
 type ICar interface {
 	Speed() int
 	Brand() string
+	Brief()
 }
 
 //ICarBuilder 造一辆车需要具有的部件
@@ -34,6 +37,14 @@ func (c *CarProto) Brand() string {
 	return c.BrandName
 }
 
+//Brief 简介
+func (c *CarProto) Brief() {
+	fmt.Println("this is a cool car")
+	fmt.Println("car wheel size: ", c.Wheel)
+	fmt.Println("car MaxSpeed: ", c.MaxSpeed)
+	fmt.Println("car Engine: ", c.Engine)
+}
+
 //CarStudio 打算通过成立造车实验室进行造车
 type CarStudio struct {
 	prototype CarProto
diff --git a/creation/06_builder/builder_test.go b/creation/06_builder/builder_test.go
index 63880bc..7602a8f 100644
--- a/creation/06_builder/builder_test.go
+++ b/creation/06_builder/builder_test.go
@@ -19,3 +19,14 @@ func TestBuilderCar(t *testing.T) {
 	fmt.Println(car.Speed())
 	fmt.Println(car.Brand())
 }
+
+func TestBuilderCarMore(t *testing.T) {
+	builder := NewCarStudio()
+	builder.Brand("land").Speed(110).Engine("bmw")
+	builder.Engine("man made").Brand("panda").Wheel(15)
+	car := builder.Build()
+
+	fmt.Println(car.Speed())
+	fmt.Println(car.Brand())
+	car.Brief()
+}