diff --git a/zh-cn/application-dev/quick-start/arkts-builderparam.md b/zh-cn/application-dev/quick-start/arkts-builderparam.md
index 8151b6e8eb4ed82a4103206871025f18dd6e6488..9e1ca6bc87cce2b06c5cddb8c7f78d9cae79997e 100644
--- a/zh-cn/application-dev/quick-start/arkts-builderparam.md
+++ b/zh-cn/application-dev/quick-start/arkts-builderparam.md
@@ -34,34 +34,34 @@
 - 用父组件自定义构建函数初始化子组件\@BuildParam装饰的方法。
 
   ```ts
-@Component
-struct Child {
-  @Builder componentBuilder() {
-    Text(`Parent builder `)
-  }
+  @Component
+  struct Child {
+    @Builder componentBuilder() {
+      Text(`Parent builder `)
+    }
 
-  @BuilderParam aBuilder0: () => void = this.componentBuilder;
+    @BuilderParam aBuilder0: () => void = this.componentBuilder;
 
-  build() {
-    Column() {
-      this.aBuilder0()
+    build() {
+      Column() {
+        this.aBuilder0()
+      }
     }
   }
-}
 
-@Entry
-@Component
-struct Parent {
-  @Builder componentBuilder() {
-    Text(`Parent builder `)
-  }
+  @Entry
+  @Component
+  struct Parent {
+    @Builder componentBuilder() {
+      Text(`Parent builder `)
+    }
 
-  build() {
-    Column() {
-      Child({ aBuilder0: this.componentBuilder })
+    build() {
+      Column() {
+        Child({ aBuilder0: this.componentBuilder })
+      }
     }
   }
-}
   ```
 
 
@@ -74,40 +74,40 @@ struct Parent {
    >  开发者谨慎使用bind改变函数调用的上下文，可能会使this指向混乱。
 
   ```ts
-@Component
-struct Child {
-  @Builder componentBuilder() {
-    Text(`Child builder `)
-  }
+  @Component
+  struct Child {
+    @Builder componentBuilder() {
+      Text(`Child builder `)
+    }
 
-  label: string = `Child`
-  @BuilderParam aBuilder0: () => void = this.componentBuilder;
-  @BuilderParam aBuilder1: () => void = this.componentBuilder;
+    label: string = `Child`
+    @BuilderParam aBuilder0: () => void = this.componentBuilder;
+    @BuilderParam aBuilder1: () => void = this.componentBuilder;
 
-  build() {
-    Column() {
-      this.aBuilder0()
-      this.aBuilder1()
+    build() {
+      Column() {
+        this.aBuilder0()
+        this.aBuilder1()
+      }
     }
   }
-}
 
-@Entry
-@Component
-struct Parent {
-  label: string = `Parent`
+  @Entry
+  @Component
+  struct Parent {
+    label: string = `Parent`
 
-  @Builder componentBuilder() {
-    Text(`${this.label}`)
-  }
+    @Builder componentBuilder() {
+      Text(`${this.label}`)
+    }
 
-  build() {
-    Column() {
-      this.componentBuilder()
-      Child({ aBuilder0: this.componentBuilder, aBuilder1: this.componentBuilder })
+    build() {
+      Column() {
+        this.componentBuilder()
+        Child({ aBuilder0: this.componentBuilder, aBuilder1: this.componentBuilder })
+      }
     }
   }
-}
   ```
 
 
diff --git a/zh-cn/application-dev/quick-start/arkts-localstorage.md b/zh-cn/application-dev/quick-start/arkts-localstorage.md
index 63b1c53b398e851c7d5923f006a8743fbeef72a7..526a72137d547f20c8f61863dc2bfeda1256fa12 100644
--- a/zh-cn/application-dev/quick-start/arkts-localstorage.md
+++ b/zh-cn/application-dev/quick-start/arkts-localstorage.md
@@ -191,37 +191,37 @@ link1.set(49); // two-way sync: link1.get() == link2.get() == prop.get() == 49
 - \@LocalStorageLink绑定LocalStorage对给定的属性，建立双向数据同步。
 
   ```ts
-// 创建新实例并使用给定对象初始化
-let storage = new LocalStorage();
-storage['PropA'] = 47;
-
-@Component
-struct Child {
-  // @LocalStorageLink变量装饰器与LocalStorage中的'PropA'属性建立双向绑定
-  @LocalStorageLink('PropA') storLink2: number = 1;
-
-  build() {
-    Button(`Child from LocalStorage ${this.storLink2}`)
-      // 更改将同步至LocalStorage中的'PropA'以及Parent.storLink1
-      .onClick(() => this.storLink2 += 1)
+  // 创建新实例并使用给定对象初始化
+  let storage = new LocalStorage();
+  storage['PropA'] = 47;
+
+  @Component
+  struct Child {
+    // @LocalStorageLink变量装饰器与LocalStorage中的'PropA'属性建立双向绑定
+    @LocalStorageLink('PropA') storLink2: number = 1;
+
+    build() {
+      Button(`Child from LocalStorage ${this.storLink2}`)
+        // 更改将同步至LocalStorage中的'PropA'以及Parent.storLink1
+        .onClick(() => this.storLink2 += 1)
+    }
   }
-}
-// 使LocalStorage可从@Component组件访问
-@Entry(storage)
-@Component
-struct CompA {
-  // @LocalStorageLink变量装饰器与LocalStorage中的'PropA'属性建立双向绑定
-  @LocalStorageLink('PropA') storLink1: number = 1;
-
-  build() {
-    Column({ space: 15 }) {
-      Button(`Parent from LocalStorage ${this.storLink1}`) // initial value from LocalStorage will be 47, because 'PropA' initialized already
-        .onClick(() => this.storLink1 += 1)
-      // @Component子组件自动获得对CompA LocalStorage实例的访问权限。
-      Child()
+  // 使LocalStorage可从@Component组件访问
+  @Entry(storage)
+  @Component
+  struct CompA {
+    // @LocalStorageLink变量装饰器与LocalStorage中的'PropA'属性建立双向绑定
+    @LocalStorageLink('PropA') storLink1: number = 1;
+
+    build() {
+      Column({ space: 15 }) {
+        Button(`Parent from LocalStorage ${this.storLink1}`) // initial value from LocalStorage will be 47, because 'PropA' initialized already
+          .onClick(() => this.storLink1 += 1)
+        // @Component子组件自动获得对CompA LocalStorage实例的访问权限。
+        Child()
+      }
     }
   }
-}
   ```
 
 
@@ -234,39 +234,39 @@ struct CompA {
 - Child组件中，Text绑定的storProp2 依旧显示47。
 
   ```ts
-// 创建新实例并使用给定对象初始化
-let storage = new LocalStorage();
-storage['PropA'] = 47;
-
-// 使LocalStorage可从@Component组件访问
-@Entry(storage)
-@Component
-struct CompA {
-  // @LocalStorageProp变量装饰器与LocalStorage中的'PropA'属性建立单向绑定
-  @LocalStorageProp('PropA') storProp1: number = 1;
-
-  build() {
-    Column({ space: 15 }) {
-      // 点击后从47开始加1，只改变当前组件显示的storProp1，不会同步到LocalStorage中
-      Button(`Parent from LocalStorage ${this.storProp1}`)
-        .onClick(() => this.storProp1 += 1)
-      Child()
+  // 创建新实例并使用给定对象初始化
+  let storage = new LocalStorage();
+  storage['PropA'] = 47;
+
+  // 使LocalStorage可从@Component组件访问
+  @Entry(storage)
+  @Component
+  struct CompA {
+    // @LocalStorageProp变量装饰器与LocalStorage中的'PropA'属性建立单向绑定
+    @LocalStorageProp('PropA') storProp1: number = 1;
+
+    build() {
+      Column({ space: 15 }) {
+        // 点击后从47开始加1，只改变当前组件显示的storProp1，不会同步到LocalStorage中
+        Button(`Parent from LocalStorage ${this.storProp1}`)
+          .onClick(() => this.storProp1 += 1)
+        Child()
+      }
     }
   }
-}
 
-@Component
-struct Child {
-  // @LocalStorageProp变量装饰器与LocalStorage中的'PropA'属性建立单向绑定
-  @LocalStorageProp('PropA') storProp2: number = 2;
+  @Component
+  struct Child {
+    // @LocalStorageProp变量装饰器与LocalStorage中的'PropA'属性建立单向绑定
+    @LocalStorageProp('PropA') storProp2: number = 2;
 
-  build() {
-    Column({ space: 15 }) {
-      // 当CompA改变时，当前storProp2不会改变，显示47
-      Text(`Parent from LocalStorage ${this.storProp2}`)
+    build() {
+      Column({ space: 15 }) {
+        // 当CompA改变时，当前storProp2不会改变，显示47
+        Text(`Parent from LocalStorage ${this.storProp2}`)
+      }
     }
   }
-}
   ```
 
 
diff --git a/zh-cn/application-dev/quick-start/arkts-mvvm.md b/zh-cn/application-dev/quick-start/arkts-mvvm.md
index 8f0a9b1fb98430d34f544c8cc7f0b98b71333ca7..1df7f939eb12e01c165ff1a207883ca1b4533385 100644
--- a/zh-cn/application-dev/quick-start/arkts-mvvm.md
+++ b/zh-cn/application-dev/quick-start/arkts-mvvm.md
@@ -125,7 +125,7 @@ ViewModel通常包含多个顶层数据源。\@State和\@Provide装饰的变量
    ```ts
    @Component
    struct LinkLinkChild {
-     @Link @Watch("testNumChange") testNumGrand: number;
+     @Link @Watch("testNumChange") testNumGrand: number = 0;
    
      testNumChange(propName: string): void {
        console.log(`LinkLinkChild: testNumGrand value ${this.testNumGrand}`);
@@ -139,7 +139,7 @@ ViewModel通常包含多个顶层数据源。\@State和\@Provide装饰的变量
    
    @Component
    struct PropLinkChild {
-     @Prop @Watch("testNumChange") testNumGrand: number;
+     @Prop @Watch("testNumChange") testNumGrand: number = 0;
    
      testNumChange(propName: string): void {
        console.log(`PropLinkChild: testNumGrand value ${this.testNumGrand}`);
@@ -175,7 +175,7 @@ ViewModel通常包含多个顶层数据源。\@State和\@Provide装饰的变量
    ```ts
    @Component
    struct LinkLinkChild {
-     @Link @Watch("testNumChange") testNumGrand: number;
+     @Link @Watch("testNumChange") testNumGrand: number = 0;
    
      testNumChange(propName: string): void {
        console.log(`LinkLinkChild: testNumGrand value ${this.testNumGrand}`);
@@ -189,7 +189,7 @@ ViewModel通常包含多个顶层数据源。\@State和\@Provide装饰的变量
    
    @Component
    struct PropLinkChild {
-     @Prop @Watch("testNumChange") testNumGrand: number;
+     @Prop @Watch("testNumChange") testNumGrand: number = 0;
    
      testNumChange(propName: string): void {
        console.log(`PropLinkChild: testNumGrand value ${this.testNumGrand}`);
@@ -277,7 +277,7 @@ ViewModel通常包含多个顶层数据源。\@State和\@Provide装饰的变量
 ```ts
 @Component
 struct LinkLinkChild {
-  @Consume @Watch("testNumChange") testNum: number;
+  @Consume @Watch("testNumChange") testNum: number = 0;
 
   testNumChange(propName: string): void {
     console.log(`LinkLinkChild: testNum value ${this.testNum}`);
@@ -290,7 +290,7 @@ struct LinkLinkChild {
 
 @Component
 struct PropLinkChild {
-  @Prop @Watch("testNumChange") testNumGrand: number;
+  @Prop @Watch("testNumChange") testNumGrand: number = 0;
 
   testNumChange(propName: string): void {
     console.log(`PropLinkChild: testNumGrand value ${this.testNumGrand}`);
@@ -609,7 +609,7 @@ struct Parent {
 
   ```ts
   @Observed class ObservedArray<T> extends Array<T> {
-      constructor(args: any[]) {
+      constructor(args: T[]) {
           super(...args);
       }
       /* otherwise empty */
@@ -686,10 +686,10 @@ struct ViewB {
   build() {
     Column() {
       ForEach(this.arrA,
-        (item) => {
+        (item: ClassA) => {
           ViewA({ label: `#${item.id}`, a: item })
         },
-        (item) => item.id.toString()
+        (item: ClassA) => item.id.toString()
       )
 
       Divider().height(10)
@@ -875,9 +875,9 @@ export class Person {
 ```ts
 @Observed
 export class ObservedArray<T> extends Array<T> {
-  constructor(args?: any[]) {
+  constructor(args: T[]) {
     console.log(`ObservedArray: ${JSON.stringify(args)} `)
-    if (Array.isArray(args)) {
+    if (args instanceof Array) {
       super(...args);
     } else {
       super(args)
@@ -916,13 +916,12 @@ export class ObservedArray<T> extends Array<T> {
    
                Divider().height(8)
    
-               ForEach(this.contacts,
-                   contact => {
-                       PersonView({person: contact, phones: contact.phones, selectedPerson: this.$selectedPerson})
-                   },
-                   contact => contact.id_
-               )
-   
+              ForEach(this.contacts, (contact: Person) => {
+                PersonView({ person: contact, phones: contact.phones as ObservedArray<string>, selectedPerson: this.$selectedPerson })
+              },
+                (contact: Person) => contact.id_
+              )
+
                Divider().height(8)
    
                Text("Edit:")
@@ -971,7 +970,7 @@ export class ObservedArray<T> extends Array<T> {
        build() {
            Flex({ direction: FlexDirection.Row, justifyContent: FlexAlign.SpaceBetween }) {
              Text(this.person.name)
-             if (this.phones.length) {
+             if (this.phones.length > 0) {
                Text(this.phones[0])
              }
            }
@@ -1005,12 +1004,12 @@ export class ObservedArray<T> extends Array<T> {
          @Link selectedPerson: Person;
      
          /*在本地副本上编辑，直到点击保存*/
-         @Prop name: string;
-         @Prop address : Address;
-         @Prop phones : ObservedArray<string>;
+         @Prop name: string = "";
+         @Prop address : Address = new Address("", 0, "");
+         @Prop phones : ObservedArray<string> = [];
      
          selectedPersonIndex() : number {
-             return this.addrBook.contacts.findIndex((person) => person.id_ == this.selectedPerson.id_);
+             return this.addrBook.contacts.findIndex((person: Person) => person.id_ == this.selectedPerson.id_);
          }
      
          build() {
@@ -1031,24 +1030,24 @@ export class ObservedArray<T> extends Array<T> {
      
                  TextInput({text: this.address.zip.toString()})
                      .onChange((value) => {
-                         const result = parseInt(value);
-                         this.address.zip= isNaN(result) ? 0 : result;
+                         const result = Number.parseInt(value);
+                         this.address.zip= Number.isNaN(result) ? 0 : result;
                      })
      
-                 if(this.phones.length>0) {
-                     ForEach(this.phones,
-                             (phone, index) => {
-                                 TextInput({text: phone})
-                                     .width(150)
-                                     .onChange((value) => {
-                                         console.log(`${index}. ${value} value has changed`)
-                                         this.phones[index] = value;
-                                     })
-                             },
-                             (phone, index) => `${index}-${phone}`
-                     ) 
+                 if (this.phones.length > 0) {
+                   ForEach(this.phones,
+                     (phone: ResourceStr, index?:number) => {
+                       TextInput({ text: phone })
+                         .width(150)
+                         .onChange((value) => {
+                           console.log(`${index}. ${value} value has changed`)
+                           this.phones[index!] = value;
+                         })
+                     },
+                     (phone: ResourceStr, index?:number) => `${index}-${phone}`
+                   )
                  }
-     
+
                  Flex({ direction: FlexDirection.Row, justifyContent: FlexAlign.SpaceBetween }) {
                      Text("Save Changes")
                          .onClick(() => {
@@ -1103,25 +1102,25 @@ export class ObservedArray<T> extends Array<T> {
 
  // ViewModel classes
  let nextId = 0;
- 
+
  @Observed
  export class ObservedArray<T> extends Array<T> {
-   constructor(args?: any[]) {
+   constructor(args: T[]) {
      console.log(`ObservedArray: ${JSON.stringify(args)} `)
-     if (Array.isArray(args)) {
+     if (args instanceof Array) {
        super(...args);
      } else {
        super(args)
      }
    }
  }
- 
+
  @Observed
  export class Address {
    street: string;
    zip: number;
    city: string;
- 
+
    constructor(street: string,
                zip: number,
                city: string) {
@@ -1130,14 +1129,14 @@ export class ObservedArray<T> extends Array<T> {
      this.city = city;
    }
  }
- 
+
  @Observed
  export class Person {
    id_: string;
    name: string;
    address: Address;
    phones: ObservedArray<string>;
- 
+
    constructor(name: string,
                street: string,
                zip: number,
@@ -1154,13 +1153,13 @@ export class ObservedArray<T> extends Array<T> {
  export class AddressBook {
    me: Person;
    contacts: ObservedArray<Person>;
- 
+
    constructor(me: Person, contacts: Person[]) {
      this.me = me;
      this.contacts = new ObservedArray<Person>(contacts);
    }
  }
- 
+
  //渲染出Person对象的名称和Observed数组<string>中的第一个号码
  //为了更新电话号码，这里需要@ObjectLink person和@ObjectLink phones，
  //不能使用this.person.phones，内部数组的更改不会被观察到。
@@ -1170,7 +1169,7 @@ export class ObservedArray<T> extends Array<T> {
    @ObjectLink person: Person;
    @ObjectLink phones: ObservedArray<string>;
    @Link selectedPerson: Person;
- 
+
    build() {
      Flex({ direction: FlexDirection.Row, justifyContent: FlexAlign.SpaceBetween }) {
        Text(this.person.name)
@@ -1185,26 +1184,26 @@ export class ObservedArray<T> extends Array<T> {
      })
    }
  }
- 
+
  // 渲染Person的详细信息
  // @Prop装饰的变量从父组件AddressBookView深拷贝数据，将变化保留在本地, TextInput的变化只会在本地副本上进行修改。
  // 点击 "Save Changes" 会将所有数据的复制通过@Prop到@Link, 同步到其他组件
  @Component
  struct PersonEditView {
    @Consume addrBook: AddressBook;
- 
+
    /* 指向父组件selectedPerson的引用 */
    @Link selectedPerson: Person;
- 
+
    /*在本地副本上编辑，直到点击保存*/
-   @Prop name: string;
-   @Prop address: Address;
-   @Prop phones: ObservedArray<string>;
- 
+   @Prop name: string = "";
+   @Prop address: Address = new Address("", 0, "");
+   @Prop phones: ObservedArray<string> = [];
+
    selectedPersonIndex(): number {
-     return this.addrBook.contacts.findIndex((person) => person.id_ == this.selectedPerson.id_);
+     return this.addrBook.contacts.findIndex((person: Person) => person.id_ == this.selectedPerson.id_);
    }
- 
+
    build() {
      Column() {
        TextInput({ text: this.name })
@@ -1215,32 +1214,32 @@ export class ObservedArray<T> extends Array<T> {
          .onChange((value) => {
            this.address.street = value;
          })
- 
+
        TextInput({ text: this.address.city })
          .onChange((value) => {
            this.address.city = value;
          })
- 
+
        TextInput({ text: this.address.zip.toString() })
          .onChange((value) => {
-           const result = parseInt(value);
-           this.address.zip = isNaN(result) ? 0 : result;
+           const result = Number.parseInt(value);
+           this.address.zip = Number.isNaN(result) ? 0 : result;
          })
- 
+
        if (this.phones.length > 0) {
          ForEach(this.phones,
-           (phone, index) => {
+           (phone: ResourceStr, index?:number) => {
              TextInput({ text: phone })
                .width(150)
                .onChange((value) => {
                  console.log(`${index}. ${value} value has changed`)
-                 this.phones[index] = value;
+                 this.phones[index!] = value;
                })
            },
-           (phone, index) => `${index}-${phone}`
+           (phone: ResourceStr, index?:number) => `${index}-${phone}`
          )
        }
- 
+
        Flex({ direction: FlexDirection.Row, justifyContent: FlexAlign.SpaceBetween }) {
          Text("Save Changes")
            .onClick(() => {
@@ -1259,49 +1258,48 @@ export class ObservedArray<T> extends Array<T> {
              .onClick(() => {
                let index = this.selectedPersonIndex();
                console.log(`delete contact at index ${index}`);
- 
+
                // 删除当前联系人
                this.addrBook.contacts.splice(index, 1);
- 
+
                // 删除当前selectedPerson，选中态前移一位
                index = (index < this.addrBook.contacts.length) ? index : index - 1;
- 
+
                // 如果contract被删除完，则设置me为选中态
                this.selectedPerson = (index >= 0) ? this.addrBook.contacts[index] : this.addrBook.me;
              })
          }
        }
- 
+
      }
    }
  }
- 
+
  @Component
  struct AddressBookView {
    @ObjectLink me: Person;
    @ObjectLink contacts: ObservedArray<Person>;
-   @State selectedPerson: Person = undefined;
- 
+   @State selectedPerson: Person = new Person("", "", 0, "", []);
+
    aboutToAppear() {
      this.selectedPerson = this.me;
    }
- 
+
    build() {
      Flex({ direction: FlexDirection.Column, justifyContent: FlexAlign.Start }) {
        Text("Me:")
        PersonView({ person: this.me, phones: this.me.phones, selectedPerson: this.$selectedPerson })
- 
+
        Divider().height(8)
- 
-       ForEach(this.contacts,
-         contact => {
-           PersonView({ person: contact, phones: contact.phones, selectedPerson: this.$selectedPerson })
-         },
-         contact => contact.id_
+
+       ForEach(this.contacts, (contact: Person) => {
+         PersonView({ person: contact, phones: contact.phones as ObservedArray<string>, selectedPerson: this.$selectedPerson })
+       },
+         (contact: Person) => contact.id_
        )
- 
+
        Divider().height(8)
- 
+
        Text("Edit:")
        PersonEditView({
          selectedPerson: this.$selectedPerson,
@@ -1313,7 +1311,7 @@ export class ObservedArray<T> extends Array<T> {
      .borderStyle(BorderStyle.Solid).borderWidth(5).borderColor(0xAFEEEE).borderRadius(5)
    }
  }
- 
+
  @Entry
  @Component
  struct PageEntry {
@@ -1324,7 +1322,7 @@ export class ObservedArray<T> extends Array<T> {
        new Person("Sam", "Itamerenkatu 9", 180, "Helsinki", ["18*********", "18*********"]),
        new Person("Vivi", "Itamerenkatu 9", 180, "Helsinki", ["18*********", "18*********"]),
      ]);
- 
+
    build() {
      Column() {
        AddressBookView({ me: this.addrBook.me, contacts: this.addrBook.contacts, selectedPerson: this.addrBook.me })
diff --git a/zh-cn/application-dev/quick-start/arkts-state-management-best-practices.md b/zh-cn/application-dev/quick-start/arkts-state-management-best-practices.md
index 2b43630dabee7a29420404f80c963cb8b99d08f7..d52f598d46194893d98f6d2cf03e3613584f3352 100644
--- a/zh-cn/application-dev/quick-start/arkts-state-management-best-practices.md
+++ b/zh-cn/application-dev/quick-start/arkts-state-management-best-practices.md
@@ -41,7 +41,7 @@ struct LinkChild {
 
 @Component
 struct PropChild2 {
-  @Prop testNum: ClassA;
+  @Prop testNum: ClassA = new ClassA(0);
 
   build() {
     Text(`PropChild2 testNum ${this.testNum.c}`)
@@ -53,7 +53,7 @@ struct PropChild2 {
 
 @Component
 struct PropChild3 {
-  @Prop testNum: ClassA;
+  @Prop testNum: ClassA = new ClassA(0);
 
   build() {
     Text(`PropChild3 testNum ${this.testNum.c}`)
@@ -460,10 +460,10 @@ struct ParentComp {
         CounterComp({ value: this.counter[2] })
         Divider().height(5)
         ForEach(this.counter,
-          item => {
+          (item: ParentCounter) => {
             CounterComp({ value: item })
           },
-          item => item.id.toString()
+          (item: ParentCounter) => item.id.toString()
         )
         Divider().height(5)
         // 第一个点击事件
@@ -576,10 +576,10 @@ struct ParentComp {
         CounterComp({ value: this.counter[2], subValue: this.counter[2].subCounter })
         Divider().height(5)
         ForEach(this.counter,
-          item => {
+          (item: ParentCounter) => {
             CounterComp({ value: item, subValue: item.subCounter })
           },
-          item => item.id.toString()
+          (item: ParentCounter) => item.id.toString()
         )
         Divider().height(5)
         Text('Parent: reset entire counter')
@@ -673,10 +673,10 @@ struct ParentComp {
         CounterComp({ value: this.counter[2], subValue: this.counter[2].subCounter })
         Divider().height(5)
         ForEach(this.counter,
-          item => {
+          (item: ParentCounter) => {
             CounterComp({ value: item, subValue: item.subCounter })
           },
-          item => item.id.toString()
+          (item: ParentCounter) => item.id.toString()
         )
         Divider().height(5)
         Text('Parent: reset entire counter')
@@ -754,6 +754,37 @@ struct CounterComp {
 
   
 ```ts
+let nextId = 1;
+
+@Observed
+class SubCounter {
+  counter: number;
+  constructor(c: number) {
+    this.counter = c;
+  }
+}
+
+@Observed
+class ParentCounter {
+  id: number;
+  counter: number;
+  subCounter: SubCounter;
+  incrCounter() {
+    this.counter++;
+  }
+  incrSubCounter(c: number) {
+    this.subCounter.counter += c;
+  }
+  setSubCounter(c: number): void {
+    this.subCounter.counter = c;
+  }
+  constructor(c: number) {
+    this.id = nextId++;
+    this.counter = c;
+    this.subCounter = new SubCounter(c);
+  }
+}
+
 @Component
 struct SubCounterComp {
   @ObjectLink subValue: SubCounter;
@@ -767,7 +798,7 @@ struct SubCounterComp {
 }
 @Component
 struct CounterComp {
-  @Prop value: ParentCounter;
+  @ObjectLink value: ParentCounter;
   build() {
     Column({ space: 10 }) {
       Text(`this.value.incrCounter(): this.value.counter: ${this.value.counter}`)
@@ -798,10 +829,10 @@ struct ParentComp {
         CounterComp({ value: this.counter[2] })
         Divider().height(5)
         ForEach(this.counter,
-          item => {
+          (item: ParentCounter) => {
             CounterComp({ value: item })
           },
-          item => item.id.toString()
+          (item: ParentCounter) => item.id.toString()
         )
         Divider().height(5)
         Text('Parent: reset entire counter')
@@ -949,15 +980,18 @@ struct CompA {
   realState1: Array<number> = [4, 1, 3, 2]; // 未使用状态变量装饰器
   realState2: Color = Color.Yellow;
 
-  updateUI(param: any): any {
+  updateUI1(param: Array<number>): Array<number> {
+    const triggerAGet = this.needsUpdate;
+    return param;
+  }
+  updateUI2(param: Color): Color {
     const triggerAGet = this.needsUpdate;
     return param;
   }
-
   build() {
     Column({ space: 20 }) {
-      ForEach(this.updateUI(this.realState1),
-        item => {
+      ForEach(this.updateUI1(this.realState1),
+        (item: Array<number>) => {
           Text(`${item}`)
         })
       Text("add item")
@@ -976,7 +1010,7 @@ struct CompA {
           // 触发UI视图更新
           this.needsUpdate = !this.needsUpdate;
         })
-    }.backgroundColor(this.updateUI(this.realState2))
+    }.backgroundColor(this.updateUI2(this.realState2))
     .width(200).height(500)
   }
 }
@@ -1005,7 +1039,7 @@ struct CompA {
   build() {
     Column({ space: 20 }) {
       ForEach(this.realState1,
-        item => {
+        (item: Array<number>) => {
           Text(`${item}`)
         })
       Text("add item")
@@ -1108,7 +1142,7 @@ struct Parent {
 
 @Component
 struct Child {
-  @Prop voteOne: ClassE
+  @ObjectLink voteOne: ClassE
   build() {
     Column() {
       Text(this.voteOne.name).fontSize(24).fontColor(Color.Red).margin(50)
@@ -1123,7 +1157,7 @@ struct Child {
 
 @Component
 struct ChildOne {
-  @Prop voteTwo: ClassD
+  @ObjectLink voteTwo: ClassD
   build() {
     Column() {
       Text(this.voteTwo.name).fontSize(24).fontColor(Color.Red).margin(50)
@@ -1138,7 +1172,7 @@ struct ChildOne {
 
 @Component
 struct ChildTwo {
-  @Prop voteThree: ClassC
+  @ObjectLink voteThree: ClassC
   build() {
     Column() {
       Text(this.voteThree.name).fontSize(24).fontColor(Color.Red).margin(50)
@@ -1153,7 +1187,7 @@ struct ChildTwo {
 
 @Component
 struct ChildThree {
-  @Prop voteFour: ClassB
+  @ObjectLink voteFour: ClassB
   build() {
     Column() {
       Text(this.voteFour.name).fontSize(24).fontColor(Color.Red).margin(50)
@@ -1168,7 +1202,7 @@ struct ChildThree {
 
 @Component
 struct ChildFour {
-  @Prop voteFive: ClassA
+  @ObjectLink voteFive: ClassA
   build() {
     Column() {
       Text(this.voteFive.title).fontSize(24).fontColor(Color.Red).margin(50)
@@ -1245,6 +1279,59 @@ class ClassE {
 以下组件层次结构呈现的是@Reusable组件复用场景的数据结构。
 
 ```ts
+// 以下是嵌套类对象的数据结构。
+@Observed
+class ClassA {
+  public title: string;
+
+  constructor(title: string) {
+    this.title = title;
+  }
+}
+
+@Observed
+class ClassB {
+  public name: string;
+  public a: ClassA;
+
+  constructor(name: string, a: ClassA) {
+    this.name = name;
+    this.a = a;
+  }
+}
+
+@Observed
+class ClassC {
+  public name: string;
+  public b: ClassB;
+
+  constructor(name: string, b: ClassB) {
+    this.name = name;
+    this.b = b;
+  }
+}
+
+@Observed
+class ClassD {
+  public name: string;
+  public c: ClassC;
+
+  constructor(name: string, c: ClassC) {
+    this.name = name;
+    this.c = c;
+  }
+}
+
+@Observed
+class ClassE {
+  public name: string;
+  public d: ClassD;
+
+  constructor(name: string, d: ClassD) {
+    this.name = name;
+    this.d = d;
+  }
+}
 @Entry
 @Component
 struct Parent {
@@ -1266,9 +1353,9 @@ struct Parent {
 @Component
 struct Child {
   @State voteOne: ClassE = new ClassE('voteOne', new ClassD('OpenHarmony', new ClassC('Hello', new ClassB('World', new ClassA('Peace')))))
-  aboutToReuse(params){
-    this.voteOne = params
 
+  aboutToReuse(params: ClassE) {
+    this.voteOne = params
   }
   build() {
     Column() {
@@ -1287,7 +1374,7 @@ struct Child {
 @Component
 struct ChildOne {
   @State voteTwo: ClassD = new ClassD('voteTwo', new ClassC('Hello', new ClassB('World', new ClassA('Peace'))))
-  aboutToReuse(params){
+  aboutToReuse(params: ClassD){
     this.voteTwo = params
   }
   build() {
@@ -1307,7 +1394,7 @@ struct ChildOne {
 @Component
 struct ChildTwo {
   @State voteThree: ClassC = new ClassC('voteThree', new ClassB('World', new ClassA('Peace')))
-  aboutToReuse(params){
+  aboutToReuse(params: ClassC){
     this.voteThree = params
 
   }
@@ -1328,7 +1415,7 @@ struct ChildTwo {
 @Component
 struct ChildThree {
   @State voteFour: ClassB = new ClassB('voteFour', new ClassA('Peace'))
-  aboutToReuse(params){
+  aboutToReuse(params: ClassB){
     this.voteFour = params
 
   }
@@ -1349,7 +1436,7 @@ struct ChildThree {
 @Component
 struct ChildFour {
   @State voteFive: ClassA = new ClassA('voteFive')
-  aboutToReuse(params){
+  aboutToReuse(params: ClassA){
     this.voteFive = params
 
   }
diff --git a/zh-cn/application-dev/quick-start/har-package.md b/zh-cn/application-dev/quick-start/har-package.md
index 0dbf9a34fd1f68a5a54f5a9297c27fe2a29302cb..991bb3b80f8fb7ee803002a9ef7dfcd3bcb815b8 100644
--- a/zh-cn/application-dev/quick-start/har-package.md
+++ b/zh-cn/application-dev/quick-start/har-package.md
@@ -75,7 +75,7 @@ index.ets文件是HAR导出声明文件的入口，HAR需要导出的接口，
 ```
 ### 导出ArkUI组件
 ArkUI组件的导出方式与ts的导出方式一致，通过`export`导出ArkUI组件，示例如下：
-```js
+```ts
 // library/src/main/ets/components/MainPage/MainPage.ets
 @Component
 export struct MainPage {
@@ -94,13 +94,13 @@ export struct MainPage {
 }
 ```
 HAR对外暴露的接口，在index.ets导出文件中声明如下所示：
-```js
+```ts
 // library/index.ets
 export { MainPage } from './src/main/ets/components/MainPage/MainPage'
 ```
 ### 导出ts类和方法
 通过`export`导出ts类和方法，支持导出多个ts类和方法，示例如下所示：
-```js
+```ts
 // library/src/main/ts/test.ets
 export class Log {
     static info(msg: string) {
@@ -117,7 +117,7 @@ export function func2() {
 }
 ```
 HAR对外暴露的接口，在index.ets导出文件中声明如下所示：
-```js
+```ts
 // library/index.ets
 export { Log } from './src/main/ts/test'
 export { func } from './src/main/ts/test'
@@ -135,7 +135,7 @@ HAR模块编译打包时会把资源打包到HAR中。在编译构建HAP时，De
 ### 引用HAR的ArkUI组件
 
 HAR的依赖配置成功后，可以引用HAR的ArkUI组件。ArkUI组件的导入方式与ts的导入方式一致，通过`import`引入HAR导出的ArkUI组件，示例如下所示：
-```js
+```ts
 // entry/src/main/ets/pages/index.ets
 import { MainPage } from "library"
 
@@ -160,7 +160,7 @@ struct Index {
 ```
 ### 引用HAR的类和方法
 通过`import`引用HAR导出的ts类和方法，示例如下所示：
-```js
+```ts
 // entry/src/main/ets/pages/index.ets
 import { Log } from "library"
 import { func } from "library"
@@ -186,7 +186,7 @@ struct Index {
 ```
 ### 引用HAR的资源
 通过`$r`引用HAR中的资源，例如在HAR模块的`src/main/resources`里添加字符串资源（在string.json中定义，name：hello_har）和图片资源（icon_har.png），然后在Entry模块中引用该字符串和图片资源的示例如下所示：
-```js
+```ts
 // entry/src/main/ets/pages/index.ets
 @Entry
 @Component