diff --git a/README.cn.md b/README.cn.md
index 35b9efca..5ce782aa 100644
--- a/README.cn.md
+++ b/README.cn.md
@@ -1209,85 +1209,11 @@ carbon.Parse("2020-08-05 13:14:15").IsWinter() // false
 ```
 
 ##### JSON
-
-###### 场景一: 所有时间字段有相同的格式
-```go
-carbon.SetDefault(carbon.Default{
-  Layout: carbon.DateTimeLayout,
-})
-
-type Person struct {
-  Name string `json:"name"`
-  Age  int    `json:"age"`
-  
-  Field1 carbon.Carbon `json:"field1"`
-  Field2 carbon.Carbon `json:"field2"`
-  Field3 carbon.Carbon `json:"field3"`
-  Field4 carbon.Carbon `json:"field4"`
-  
-  Field5 carbon.Carbon `json:"field5"`
-  Field6 carbon.Carbon `json:"field6"`
-  Field7 carbon.Carbon `json:"field7"`
-  Field8 carbon.Carbon `json:"field8"`
-}
-
-now := carbon.Parse("2020-08-05 13:14:15", carbon.PRC)
-person := Person {
-  Name:   "gouguoyin",
-  Age:    18,
-  
-  Field1: now,
-  Field2: now,
-  Field3: now,
-  Field4: now,
-  Field5: now,
-  Field6: now,
-  Field7: now,
-  Field8: now,
-}
-
-data, marshalErr := json.Marshal(person)
-if marshalErr != nil {
-  // 错误处理
-  log.Fatal(marshalErr)
-}
-fmt.Printf("%s", data)
-// 输出
-{
-  "name": "gouguoyin",
-  "age": 18,
-  "field1": "2020-08-05 13:14:15",
-  "field2": "2020-08-05 13:14:15",
-  "field3": "2020-08-05 13:14:15",
-  "field4": "2020-08-05 13:14:15",
-  "field5": "2020-08-05 13:14:15",
-  "field6": "2020-08-05 13:14:15",
-  "field7": "2020-08-05 13:14:15",
-  "field8": "2020-08-05 13:14:15"
-}
-
-unmarshalErr := json.Unmarshal(data, &person)
-if unmarshalErr != nil {
-  // 错误处理
-  log.Fatal(unmarshalErr)
-}
-
-fmt.Printf("%s", person.Field1) // 2020-08-05 13:14:15
-fmt.Printf("%s", person.Field2) // 2020-08-05 13:14:15
-fmt.Printf("%s", person.Field3) // 2020-08-05 13:14:15
-fmt.Printf("%s", person.Field4) // 2020-08-05 13:14:15
-
-fmt.Printf("%s", person.Field5) // 2020-08-05 13:14:15
-fmt.Printf("%s", person.Field6) // 2020-08-05 13:14:15
-fmt.Printf("%s", person.Field7) // 2020-08-05 13:14:15
-fmt.Printf("%s", person.Field8) // 2020-08-05 13:14:15
-```
-
-###### 场景二: 不同时间字段有不同的格式
 ```go
 type Person struct {
   Name string `json:"name"`
   Age int `json:"age"`
+  Birthday0 carbon.Carbon `json:"birthday0"`
   Birthday1 carbon.DateTime `json:"birthday1"`
   Birthday2 carbon.DateTimeMilli `json:"birthday2"`
   Birthday3 carbon.DateTimeMicro `json:"birthday3"`
@@ -1309,6 +1235,7 @@ type Person struct {
 person := Person {
   Name:        "gouguoyin",
   Age:          18,
+  Birthday0:    carbon.Now().SubYears(18),
   Birthday1:    carbon.Now().SubYears(18).ToDateTimeStruct(),
   Birthday2:    carbon.Now().SubYears(18).ToDateTimeMilliStruct(),
   Birthday3:    carbon.Now().SubYears(18).ToDateTimeMicroStruct(),
@@ -1337,6 +1264,7 @@ fmt.Printf("%s", data)
 {
   "name": "gouguoyin",
   "age": 18,
+  "birthday0": "2003-07-16 13:14:15",
   "birthday1": "2003-07-16 13:14:15",
   "birthday2": "2003-07-16 13:14:15.999",
   "birthday3": "2003-07-16 13:14:15.999999",
@@ -1361,6 +1289,7 @@ if err != nil {
   log.Fatal(err)
 }
 
+person.Birthday0.String() // 2003-07-16 13:14:15
 person.Birthday1.String() // 2003-07-16 13:14:15
 person.Birthday2.String() // 2003-07-16 13:14:15.999
 person.Birthday3.String() // 2003-07-16 13:14:15.999999
diff --git a/README.jp.md b/README.jp.md
index 504b6594..c7287a09 100644
--- a/README.jp.md
+++ b/README.jp.md
@@ -1211,84 +1211,11 @@ carbon.Parse("2020-08-05 13:14:15").IsWinter() // false
 
 ##### JSON
 
-###### シナリオ 1: すべての時刻フィールドが同じ形式である
-```go
-carbon.SetDefault(carbon.Default{
-  Layout: carbon.DateTimeLayout,
-})
-
-type Person struct {
-  Name string `json:"name"`
-  Age  int    `json:"age"`
-  
-  Field1 carbon.Carbon `json:"field1"`
-  Field2 carbon.Carbon `json:"field2"`
-  Field3 carbon.Carbon `json:"field3"`
-  Field4 carbon.Carbon `json:"field4"`
-  
-  Field5 carbon.Carbon `json:"field5"`
-  Field6 carbon.Carbon `json:"field6"`
-  Field7 carbon.Carbon `json:"field7"`
-  Field8 carbon.Carbon `json:"field8"`
-}
-
-now := carbon.Parse("2020-08-05 13:14:15", carbon.PRC)
-person := Person {
-  Name:   "gouguoyin",
-  Age:    18,
-  
-  Field1: now,
-  Field2: now,
-  Field3: now,
-  Field4: now,
-  Field5: now,
-  Field6: now,
-  Field7: now,
-  Field8: now,
-}
-
-data, marshalErr := json.Marshal(person)
-if marshalErr != nil {
-  // エラー処理...
-  log.Fatal(marshalErr)
-}
-fmt.Printf("%s", data)
-// 出力
-{
-  "name": "gouguoyin",
-  "age": 18,
-  "field1": "2020-08-05 13:14:15",
-  "field2": "2020-08-05 13:14:15",
-  "field3": "2020-08-05 13:14:15",
-  "field4": "2020-08-05 13:14:15",
-  "field5": "2020-08-05 13:14:15",
-  "field6": "2020-08-05 13:14:15",
-  "field7": "2020-08-05 13:14:15",
-  "field8": "2020-08-05 13:14:15"
-}
-
-unmarshalErr := json.Unmarshal(data, &person)
-if unmarshalErr != nil {
-  // エラー処理...
-  log.Fatal(unmarshalErr)
-}
-
-fmt.Printf("%s", person.Field1) // 2020-08-05 13:14:15
-fmt.Printf("%s", person.Field2) // 2020-08-05 13:14:15
-fmt.Printf("%s", person.Field3) // 2020-08-05 13:14:15
-fmt.Printf("%s", person.Field4) // 2020-08-05 13:14:15
-
-fmt.Printf("%s", person.Field5) // 2020-08-05 13:14:15
-fmt.Printf("%s", person.Field6) // 2020-08-05 13:14:15
-fmt.Printf("%s", person.Field7) // 2020-08-05 13:14:15
-fmt.Printf("%s", person.Field8) // 2020-08-05 13:14:15
-```
-
-###### シナリオ 2: 異なる時刻フィールドは異なる形式を持つ
 ```go
 type Person struct {
   Name string `json:"name"`
   Age int `json:"age"`
+  Birthday0 carbon.Carbon `json:"birthday0"`
   Birthday1 carbon.DateTime `json:"birthday1"`
   Birthday2 carbon.DateTimeMilli `json:"birthday2"`
   Birthday3 carbon.DateTimeMicro `json:"birthday3"`
@@ -1310,6 +1237,7 @@ type Person struct {
 person := Person {
   Name:        "gouguoyin",
   Age:          18,
+  Birthday0:    carbon.Now().SubYears(18),
   Birthday1:    carbon.Now().SubYears(18).ToDateTimeStruct(),
   Birthday2:    carbon.Now().SubYears(18).ToDateTimeMilliStruct(),
   Birthday3:    carbon.Now().SubYears(18).ToDateTimeMicroStruct(),
@@ -1338,6 +1266,7 @@ fmt.Printf("%s", data)
 {
   "name": "gouguoyin",
   "age": 18,
+  "birthday0": "2003-07-16 13:14:15",
   "birthday1": "2003-07-16 13:14:15",
   "birthday2": "2003-07-16 13:14:15.999",
   "birthday3": "2003-07-16 13:14:15.999999",
@@ -1362,6 +1291,7 @@ if err != nil {
   log.Fatal(err)
 }
 
+person.Birthday0.String() // 2003-07-16 13:14:15
 person.Birthday1.String() // 2003-07-16 13:14:15
 person.Birthday2.String() // 2003-07-16 13:14:15.999
 person.Birthday3.String() // 2003-07-16 13:14:15.999999
diff --git a/README.md b/README.md
index a9f26cf1..c246bc09 100644
--- a/README.md
+++ b/README.md
@@ -1205,85 +1205,11 @@ carbon.Parse("2020-08-05 13:14:15").IsWinter() // false
 
 ##### JSON
 
-###### Scene one: all time fields have the same format
-```go
-carbon.SetDefault(carbon.Default{
-  Layout: carbon.DateTimeLayout,
-})
-
-type Person struct {
-  Name string `json:"name"`
-  Age  int    `json:"age"`
-  
-  Field1 carbon.Carbon `json:"field1"`
-  Field2 carbon.Carbon `json:"field2"`
-  Field3 carbon.Carbon `json:"field3"`
-  Field4 carbon.Carbon `json:"field4"`
-  
-  Field5 carbon.Carbon `json:"field5"`
-  Field6 carbon.Carbon `json:"field6"`
-  Field7 carbon.Carbon `json:"field7"`
-  Field8 carbon.Carbon `json:"field8"`
-}
-
-now := carbon.Parse("2020-08-05 13:14:15", carbon.PRC)
-person := Person {
-  Name:   "gouguoyin",
-  Age:    18,
-  
-  Field1: now,
-  Field2: now,
-  Field3: now,
-  Field4: now,
-  Field5: now,
-  Field6: now,
-  Field7: now,
-  Field8: now,
-}
-
-data, marshalErr := json.Marshal(person)
-if marshalErr != nil {
-  // Error handle...
-  log.Fatal(marshalErr)
-}
-fmt.Printf("%s", data)
-// Output
-{
-  "name": "gouguoyin",
-  "age": 18,
-  "field1": "2020-08-05 13:14:15",
-  "field2": "2020-08-05 13:14:15",
-  "field3": "2020-08-05 13:14:15",
-  "field4": "2020-08-05 13:14:15",
-  "field5": "2020-08-05 13:14:15",
-  "field6": "2020-08-05 13:14:15",
-  "field7": "2020-08-05 13:14:15",
-  "field8": "2020-08-05 13:14:15"
-}
-
-var person Person
-unmarshalErr := json.Unmarshal(data, &person)
-if unmarshalErr != nil {
-  // Error handle...
-  log.Fatal(unmarshalErr)
-}
-
-fmt.Printf("%s", person.Field1) // 2020-08-05 13:14:15
-fmt.Printf("%s", person.Field2) // 2020-08-05 13:14:15
-fmt.Printf("%s", person.Field3) // 2020-08-05 13:14:15
-fmt.Printf("%s", person.Field4) // 2020-08-05 13:14:15
-
-fmt.Printf("%s", person.Field5) // 2020-08-05 13:14:15
-fmt.Printf("%s", person.Field6) // 2020-08-05 13:14:15
-fmt.Printf("%s", person.Field7) // 2020-08-05 13:14:15
-fmt.Printf("%s", person.Field8) // 2020-08-05 13:14:15
-```
-
-###### Scene two: different time fields have different formats
 ```go
 type Person struct {
   Name string `json:"name"`
   Age int `json:"age"`
+  Birthday0 carbon.Carbon `json:"birthday0"`
   Birthday1 carbon.DateTime `json:"birthday1"`
   Birthday2 carbon.DateTimeMilli `json:"birthday2"`
   Birthday3 carbon.DateTimeMicro `json:"birthday3"`
@@ -1305,6 +1231,7 @@ type Person struct {
 person := Person {
   Name:        "gouguoyin",
   Age:          18,
+  Birthday0:    carbon.Now().SubYears(18),
   Birthday1:    carbon.Now().SubYears(18).ToDateTimeStruct(),
   Birthday2:    carbon.Now().SubYears(18).ToDateTimeMilliStruct(),
   Birthday3:    carbon.Now().SubYears(18).ToDateTimeMicroStruct(),
@@ -1333,6 +1260,7 @@ fmt.Printf("%s", data)
 {
   "name": "gouguoyin",
   "age": 18,
+  "birthday0": "2003-07-16 13:14:15",
   "birthday1": "2003-07-16 13:14:15",
   "birthday2": "2003-07-16 13:14:15.999",
   "birthday3": "2003-07-16 13:14:15.999999",
@@ -1357,6 +1285,7 @@ if err != nil {
   log.Fatal(err)
 }
 
+person.Birthday0.String() // 2003-07-16 13:14:15
 person.Birthday1.String() // 2003-07-16 13:14:15
 person.Birthday2.String() // 2003-07-16 13:14:15.999
 person.Birthday3.String() // 2003-07-16 13:14:15.999999