diff --git a/Document/README/Usages.md b/Document/README/Usages.md
index 4f9e5af..5d759ab 100644
--- a/Document/README/Usages.md
+++ b/Document/README/Usages.md
@@ -544,19 +544,26 @@ struct SubModel: SmartCodable {
 ### Update Existing Model（更新现有模型）
 
 ```
-var dest = Model(name: "xiaoming", hobby: "football")
-let src = Model(name: "dahuang", hobby: "sleep")    
+struct Model: SmartCodable {
+    var name: String = ""
+    var age: Int = 0
+}
 
-SmartUpdater.update(&dest, from: src, keyPath: \.name)
-// after this dest will be:
-// Model(name: "dahuang", hobby: Optional("football"))
-// instead of 
-// Model(name: "xiaoming", hobby: Optional("football"))
-```
+var dic1: [String : Any] = [
+    "name": "mccc",
+    "age": 10
+]
+let dic2: [String : Any] = [
+    "age": 200
+]
 
-If you need to change more than one at a time（如果你需要同时更改多个）
+guard var model = Model.deserialize(from: dic1) else { return }
 
+SmartUpdater.update(&model, from: dic2)
+
+// now: model is ["name": mccc, "age": 200].
 ```
-SmartUpdater.update(&dest, from: src, keyPaths: (\.name, \.hobby))
-```
 
+It can accommodate any data structure, including nested array structures.
+
+它可以适应任何数据结构，包括嵌套的数组结构。
diff --git "a/Example/SmartCodable/Smart/1.Introduce(\344\275\277\347\224\250\344\273\213\347\273\215)/Introduce_11ViewController.swift" "b/Example/SmartCodable/Smart/1.Introduce(\344\275\277\347\224\250\344\273\213\347\273\215)/Introduce_11ViewController.swift"
index 26fe4be..70954c6 100644
--- "a/Example/SmartCodable/Smart/1.Introduce(\344\275\277\347\224\250\344\273\213\347\273\215)/Introduce_11ViewController.swift"
+++ "b/Example/SmartCodable/Smart/1.Introduce(\344\275\277\347\224\250\344\273\213\347\273\215)/Introduce_11ViewController.swift"
@@ -14,28 +14,22 @@ class Introduce_11ViewController: BaseCompatibilityViewController {
     
     override func viewDidLoad() {
         super.viewDidLoad()
-            
         
-        var dest = Model(name: "xiaoming", hobby: "football")
-        let src = Model(name: "dahuang", hobby: "sleep")
-
-//        print(dest)
-//        SmartUpdater.update(&dest, from: src, keyPath: \.name)
-//        
-//        print(dest)
-//        
-//        SmartUpdater.update(&dest, from: src, keyPaths: (\.name, \.hobby))
-//        
-//        print(dest)
+        var dic1: [String : Any] = [
+            "name": "mccc",
+            "age": 10
+        ]
+        let dic2: [String : Any] = [
+            "age": 200
+        ]
+        
+        guard var model = Model.deserialize(from: dic1) else { return }
+        SmartUpdater.update(&model, from: dic2)
+        smartPrint(value: model)
     }
-}
-
-
-extension Introduce_11ViewController {
-    
     struct Model: SmartCodable {
         var name: String = ""
-        var hobby: String?
+        var age: Int = 0
     }
 }
 
diff --git a/Example/SmartCodable/Test2ViewController.swift b/Example/SmartCodable/Test2ViewController.swift
index 0447b66..8e7833f 100644
--- a/Example/SmartCodable/Test2ViewController.swift
+++ b/Example/SmartCodable/Test2ViewController.swift
@@ -19,39 +19,20 @@ class Test2ViewController: BaseViewController {
     override func viewDidLoad() {
         super.viewDidLoad()
         
-        var dic: [String : Any] = [
-            "a1": "1111",
-            "a2": 11111,
-            "a3": [
-                "b1": "2222",
-                "b2": 2222,
-                "b3": [1, 2, 3]
-            ]
+        var dic1: [String : Any] = [
+            "name": "mccc",
+            "age": 10
         ]
         let dic2: [String : Any] = [
-            "a2": 2222,
-            "a3": [
-                "b3": [100, 200, 300]
-            ]
+            "age": 200
         ]
         
-        guard var model = Model.deserialize(from: dic) else { return }
-        
-        
-        let json2 = dic2.bt_toJSONString()
-        
-        SmartUpdater.update(&model, from: json2)
-        smartPrint(value: model)
+        guard var model = Model.deserialize(from: dic1) else { return }
+        SmartUpdater.update(&model, from: dic2)
     }
     struct Model: SmartCodable {
-        var a1: String = ""
-        var a2: Int = 0
-        var a3: SubModel = SubModel()
-    }
-    
-    struct SubModel: SmartCodable {
-        var b1: String = ""
-        var b2: Int = 0
-        var b3: [Int] = []
+        var name: String = ""
+        var age: Int = 0
     }
 }
+