diff --git a/README.cn.md b/README.cn.md
index bb6f06f..99565f9 100644
--- a/README.cn.md
+++ b/README.cn.md
@@ -1287,26 +1287,6 @@ person := Person {
     CreatedAt4:   carbon.Now().ToTimestampNanoStruct(),
 }
 
-person.Birthday1.String() // 2002-08-05 13:14:15
-person.Birthday2.String() // 2002-08-05 13:14:15.999
-person.Birthday3.String() // 2002-08-05 13:14:15.999999
-person.Birthday4.String() // 2002-08-05 13:14:15.999999999
-
-person.GraduatedAt1.String() // 2020-08-05
-person.GraduatedAt2.String() // 2020-08-05.999
-person.GraduatedAt3.String() // 2020-08-05.999999
-person.GraduatedAt4.String() // 2020-08-05.999999999
-
-person.CreatedAt1.String() // "1691212455"
-person.CreatedAt2.String() // "1722834855999"
-person.CreatedAt3.String() // "1754370855999999"
-person.CreatedAt4.String() // "1754370855999999999"
-
-person.CreatedAt1.Int64() // 1691212455
-person.CreatedAt2.Int64() // 1722834855999
-person.CreatedAt3.Int64() // 1754370855999999
-person.CreatedAt4.Int64() // 1754370855999999999
-
 ```
 
 ###### JSON 编码
@@ -1362,9 +1342,26 @@ if err != nil {
     // 错误处理
     log.Fatal(err)
 }
-fmt.Printf("%+v", *person)
-// 输出
-{Name:gouguoyin Age:18 Birthday1:2003-07-16 16:22:02 Birthday2:2003-07-16 16:22:02.999 Birthday3:2003-07-16 16:22:02.999999 Birthday4:2003-07-16 16:22:02.999999999 GraduatedAt1:2020-08-05 GraduatedAt2:2020-08-05.999 GraduatedAt3:2020-08-05.999999 GraduatedAt4:2020-08-05.999999999 CreatedAt1:2020-08-05 13:14:15 CreatedAt2:2020-08-05 13:14:15.999 CreatedAt3:2020-08-05 13:14:15.999999 CreatedAt4:2020-08-05 13:14:15.999999999}
+
+person.Birthday1.String() // 2002-08-05 13:14:15
+person.Birthday2.String() // 2002-08-05 13:14:15.999
+person.Birthday3.String() // 2002-08-05 13:14:15.999999
+person.Birthday4.String() // 2002-08-05 13:14:15.999999999
+
+person.GraduatedAt1.String() // 2020-08-05
+person.GraduatedAt2.String() // 2020-08-05.999
+person.GraduatedAt3.String() // 2020-08-05.999999
+person.GraduatedAt4.String() // 2020-08-05.999999999
+
+person.CreatedAt1.String() // "1691212455"
+person.CreatedAt2.String() // "1722834855999"
+person.CreatedAt3.String() // "1754370855999999"
+person.CreatedAt4.String() // "1754370855999999999"
+
+person.CreatedAt1.Int64() // 1691212455
+person.CreatedAt2.Int64() // 1722834855999
+person.CreatedAt3.Int64() // 1754370855999999
+person.CreatedAt4.Int64() // 1754370855999999999
 ```
 
 ##### 国际化支持
diff --git a/README.jp.md b/README.jp.md
index 529529f..683a1b0 100644
--- a/README.jp.md
+++ b/README.jp.md
@@ -1286,25 +1286,6 @@ person := Person {
     CreatedAt4:   carbon.Now().ToTimestampNanoStruct(),
 }
 
-person.Birthday1.String() // 2002-08-05 13:14:15
-person.Birthday2.String() // 2002-08-05 13:14:15.999
-person.Birthday3.String() // 2002-08-05 13:14:15.999999
-person.Birthday4.String() // 2002-08-05 13:14:15.999999999
-
-person.GraduatedAt1.String() // 2020-08-05
-person.GraduatedAt2.String() // 2020-08-05.999
-person.GraduatedAt3.String() // 2020-08-05.999999
-person.GraduatedAt4.String() // 2020-08-05.999999999
-
-person.CreatedAt1.String() // "1691212455"
-person.CreatedAt2.String() // "1722834855999"
-person.CreatedAt3.String() // "1754370855999999"
-person.CreatedAt4.String() // "1754370855999999999"
-
-person.CreatedAt1.Int64() // 1691212455
-person.CreatedAt2.Int64() // 1722834855999
-person.CreatedAt3.Int64() // 1754370855999999
-person.CreatedAt4.Int64() // 1754370855999999999
 ```
 
 ###### JSON コーディング
@@ -1360,9 +1341,26 @@ if err != nil {
     // エラー処理...
     log.Fatal(c.Error)
 }
-fmt.Printf("%+v", *person)
-// 出力
-{Name:gouguoyin Age:18 Birthday1:2003-07-16 16:22:02 Birthday2:2003-07-16 16:22:02.999 Birthday3:2003-07-16 16:22:02.999999 Birthday4:2003-07-16 16:22:02.999999999 GraduatedAt1:2020-08-05 GraduatedAt2:2020-08-05.999 GraduatedAt3:2020-08-05.999999 GraduatedAt4:2020-08-05.999999999 CreatedAt1:2020-08-05 13:14:15 CreatedAt2:2020-08-05 13:14:15.999 CreatedAt3:2020-08-05 13:14:15.999999 CreatedAt4:2020-08-05 13:14:15.999999999}
+
+person.Birthday1.String() // 2002-08-05 13:14:15
+person.Birthday2.String() // 2002-08-05 13:14:15.999
+person.Birthday3.String() // 2002-08-05 13:14:15.999999
+person.Birthday4.String() // 2002-08-05 13:14:15.999999999
+
+person.GraduatedAt1.String() // 2020-08-05
+person.GraduatedAt2.String() // 2020-08-05.999
+person.GraduatedAt3.String() // 2020-08-05.999999
+person.GraduatedAt4.String() // 2020-08-05.999999999
+
+person.CreatedAt1.String() // "1691212455"
+person.CreatedAt2.String() // "1722834855999"
+person.CreatedAt3.String() // "1754370855999999"
+person.CreatedAt4.String() // "1754370855999999999"
+
+person.CreatedAt1.Int64() // 1691212455
+person.CreatedAt2.Int64() // 1722834855999
+person.CreatedAt3.Int64() // 1754370855999999
+person.CreatedAt4.Int64() // 1754370855999999999
 ```
 
 ##### 国際化サポート
diff --git a/README.md b/README.md
index 325a947..a2dae37 100644
--- a/README.md
+++ b/README.md
@@ -1281,25 +1281,6 @@ person := Person {
     CreatedAt4:   carbon.Now().ToTimestampNanoStruct(),
 }
 
-person.Birthday1.String() // 2002-08-05 13:14:15
-person.Birthday2.String() // 2002-08-05 13:14:15.999
-person.Birthday3.String() // 2002-08-05 13:14:15.999999
-person.Birthday4.String() // 2002-08-05 13:14:15.999999999
-
-person.GraduatedAt1.String() // 2020-08-05
-person.GraduatedAt2.String() // 2020-08-05.999
-person.GraduatedAt3.String() // 2020-08-05.999999
-person.GraduatedAt4.String() // 2020-08-05.999999999
-
-person.CreatedAt1.String() // "1691212455"
-person.CreatedAt2.String() // "1722834855999"
-person.CreatedAt3.String() // "1754370855999999"
-person.CreatedAt4.String() // "1754370855999999999"
-
-person.CreatedAt1.Int64() // 1691212455
-person.CreatedAt2.Int64() // 1722834855999
-person.CreatedAt3.Int64() // 1754370855999999
-person.CreatedAt4.Int64() // 1754370855999999999
 ```
 
 ###### JSON encode
@@ -1355,9 +1336,26 @@ if err != nil {
     // Error handle...
     log.Fatal(err)
 }
-fmt.Printf("%+v", *person)
-// Output
-{Name:gouguoyin Age:18 Birthday1:2003-07-16 16:22:02 Birthday2:2003-07-16 16:22:02.999 Birthday3:2003-07-16 16:22:02.999999 Birthday4:2003-07-16 16:22:02.999999999 GraduatedAt1:2020-08-05 GraduatedAt2:2020-08-05.999 GraduatedAt3:2020-08-05.999999 GraduatedAt4:2020-08-05.999999999 CreatedAt1:2020-08-05 13:14:15 CreatedAt2:2020-08-05 13:14:15.999 CreatedAt3:2020-08-05 13:14:15.999999 CreatedAt4:2020-08-05 13:14:15.999999999}
+
+person.Birthday1.String() // 2002-08-05 13:14:15
+person.Birthday2.String() // 2002-08-05 13:14:15.999
+person.Birthday3.String() // 2002-08-05 13:14:15.999999
+person.Birthday4.String() // 2002-08-05 13:14:15.999999999
+
+person.GraduatedAt1.String() // 2020-08-05
+person.GraduatedAt2.String() // 2020-08-05.999
+person.GraduatedAt3.String() // 2020-08-05.999999
+person.GraduatedAt4.String() // 2020-08-05.999999999
+
+person.CreatedAt1.String() // "1691212455"
+person.CreatedAt2.String() // "1722834855999"
+person.CreatedAt3.String() // "1754370855999999"
+person.CreatedAt4.String() // "1754370855999999999"
+
+person.CreatedAt1.Int64() // 1691212455
+person.CreatedAt2.Int64() // 1722834855999
+person.CreatedAt3.Int64() // 1754370855999999
+person.CreatedAt4.Int64() // 1754370855999999999
 ```
 
 ##### I18n