diff --git a/lib/06/02/main.dart b/lib/06/02/main.dart
new file mode 100644
index 0000000..77940c4
--- /dev/null
+++ b/lib/06/02/main.dart
@@ -0,0 +1,48 @@
+import 'package:flutter/material.dart';
+
+import 'pages/page_a.dart';
+import 'pages/page_b.dart';
+import 'pages/page_c.dart';
+
+void main() {
+  runApp(const MyApp());
+}
+
+class MyApp extends StatelessWidget {
+  const MyApp({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'Flutter Demo',
+      debugShowCheckedModeBanner: false,
+      theme: ThemeData(
+        appBarTheme: AppBarTheme(
+          elevation: 0,
+          iconTheme: IconThemeData(color: Colors.black),
+          titleTextStyle: TextStyle(color: Colors.black,fontSize: 18,fontWeight: FontWeight.bold)
+        )
+      ),
+      home:  const PageA(),
+      onUnknownRoute: _onUnknownRoute,
+    );
+  }
+
+  Route? _onUnknownRoute(RouteSettings settings) {
+    String? name = settings.name;
+    Widget? page ;
+    if(name=='/a'){
+      page = const PageA();
+    }
+    if(name=='/b'){
+      page = const PageB();
+    }
+    if(name=='/c'){
+      page = const PageC();
+    }
+    if(page!=null){
+      return MaterialPageRoute(builder: (_)=> const PageB());
+    }
+    return null;
+  }
+}
diff --git a/lib/06/02/pages/page_a.dart b/lib/06/02/pages/page_a.dart
new file mode 100644
index 0000000..940ff84
--- /dev/null
+++ b/lib/06/02/pages/page_a.dart
@@ -0,0 +1,28 @@
+import 'package:flutter/material.dart';
+import 'page_b.dart';
+
+class PageA extends StatelessWidget {
+  const PageA({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    const Color bgColor = Color(0xffCCFFFF);
+
+    return Scaffold(
+      backgroundColor: bgColor,
+      appBar: AppBar(title: const Text('A'),
+        backgroundColor: bgColor,
+      ),
+      body: Center(
+        child: ElevatedButton(
+          onPressed: ()=>toPageB(context),
+          child: const Text('Push B'),
+        ),
+      ),
+    );
+  }
+
+  void toPageB(BuildContext context){
+    Navigator.of(context).push(MaterialPageRoute(builder: (_)=> const PageB()));
+  }
+}
diff --git a/lib/06/02/pages/page_b.dart b/lib/06/02/pages/page_b.dart
new file mode 100644
index 0000000..a132264
--- /dev/null
+++ b/lib/06/02/pages/page_b.dart
@@ -0,0 +1,29 @@
+import 'package:flutter/material.dart';
+
+import 'page_c.dart';
+
+class PageB extends StatelessWidget {
+  const PageB({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    const Color bgColor = Color(0xffCCE5FF);
+
+    return Scaffold(
+      backgroundColor: bgColor,
+      appBar: AppBar(title: const Text('B',),
+        backgroundColor: bgColor,
+      ),
+      body: Center(
+        child: ElevatedButton(
+          onPressed: ()=>toPageC(context),
+          child: const Text('Push C'),
+        ),
+      ),
+    );
+  }
+
+  void toPageC(BuildContext context){
+    Navigator.of(context).push(MaterialPageRoute(builder: (_)=> const PageC()));
+  }
+}
\ No newline at end of file
diff --git a/lib/06/02/pages/page_c.dart b/lib/06/02/pages/page_c.dart
new file mode 100644
index 0000000..ac595f0
--- /dev/null
+++ b/lib/06/02/pages/page_c.dart
@@ -0,0 +1,21 @@
+import 'package:flutter/material.dart';
+
+class PageC extends StatelessWidget {
+  const PageC({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    const Color bgColor = Color(0xffFFE6CD);
+
+    return Scaffold(
+      backgroundColor: bgColor,
+      appBar: AppBar(
+        title: const Text('C'),
+        backgroundColor: bgColor,
+      ),
+      body: const Center(
+        child: Text('到达终点'),
+      ),
+    );
+  }
+}
diff --git a/lib/07/03/main.dart b/lib/07/03/main.dart
new file mode 100644
index 0000000..346b963
--- /dev/null
+++ b/lib/07/03/main.dart
@@ -0,0 +1,48 @@
+import 'package:flutter/material.dart';
+
+import 'pages/page_a.dart';
+import 'pages/page_b.dart';
+import 'pages/page_c.dart';
+
+void main() {
+  runApp(const MyApp());
+}
+
+class MyApp extends StatelessWidget {
+  const MyApp({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'Flutter Demo',
+      debugShowCheckedModeBanner: false,
+      theme: ThemeData(
+        appBarTheme: AppBarTheme(
+          elevation: 0,
+          iconTheme: IconThemeData(color: Colors.black),
+          titleTextStyle: TextStyle(color: Colors.black,fontSize: 18,fontWeight: FontWeight.bold)
+        )
+      ),
+      home:  const PageA(),
+      onUnknownRoute: _onUnknownRoute,
+    );
+  }
+
+  Route? _onUnknownRoute(RouteSettings settings) {
+    String? name = settings.name;
+    Widget? page ;
+    if(name=='/a'){
+      page = const PageA();
+    }
+    if(name=='/b'){
+      page = const PageB();
+    }
+    if(name=='/c'){
+      page = const PageC();
+    }
+    if(page!=null){
+      return MaterialPageRoute(builder: (_)=> page!,settings: settings);
+    }
+    return null;
+  }
+}
diff --git a/lib/07/03/pages/page_a.dart b/lib/07/03/pages/page_a.dart
new file mode 100644
index 0000000..c68192d
--- /dev/null
+++ b/lib/07/03/pages/page_a.dart
@@ -0,0 +1,28 @@
+import 'package:flutter/material.dart';
+import 'page_b.dart';
+
+class PageA extends StatelessWidget {
+  const PageA({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    const Color bgColor = Color(0xffCCFFFF);
+
+    return Scaffold(
+      backgroundColor: bgColor,
+      appBar: AppBar(title: const Text('A'),
+        backgroundColor: bgColor,
+      ),
+      body: Center(
+        child: ElevatedButton(
+          onPressed: ()=>toPageB(context),
+          child: const Text('Push B'),
+        ),
+      ),
+    );
+  }
+
+  void toPageB(BuildContext context){
+    Navigator.of(context).pushNamed('/a');
+  }
+}
diff --git a/lib/07/03/pages/page_b.dart b/lib/07/03/pages/page_b.dart
new file mode 100644
index 0000000..b36561e
--- /dev/null
+++ b/lib/07/03/pages/page_b.dart
@@ -0,0 +1,29 @@
+import 'package:flutter/material.dart';
+
+import 'page_c.dart';
+
+class PageB extends StatelessWidget {
+  const PageB({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    const Color bgColor = Color(0xffCCE5FF);
+
+    return Scaffold(
+      backgroundColor: bgColor,
+      appBar: AppBar(title: const Text('B',),
+        backgroundColor: bgColor,
+      ),
+      body: Center(
+        child: ElevatedButton(
+          onPressed: ()=>toPageC(context),
+          child: const Text('Push C'),
+        ),
+      ),
+    );
+  }
+
+  void toPageC(BuildContext context){
+    Navigator.of(context).pushNamed('/c');
+  }
+}
\ No newline at end of file
diff --git a/lib/07/03/pages/page_c.dart b/lib/07/03/pages/page_c.dart
new file mode 100644
index 0000000..10b7a19
--- /dev/null
+++ b/lib/07/03/pages/page_c.dart
@@ -0,0 +1,36 @@
+import 'package:flutter/material.dart';
+
+import 'page_d.dart';
+
+class PageC extends StatelessWidget {
+  const PageC({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    const Color bgColor = Color(0xffFFE6CD);
+
+    return Scaffold(
+      backgroundColor: bgColor,
+      appBar: AppBar(
+        title: const Text('C'),
+        backgroundColor: bgColor,
+      ),
+      body:  Center(
+        child: ElevatedButton(
+          onPressed: ()=>toPageD(context),
+          child: const Text('Push D Remove Until A'),
+        ),
+      ),
+    );
+  }
+
+  void toPageD(BuildContext context){
+    Navigator.of(context).pushAndRemoveUntil(
+      MaterialPageRoute<void>(builder: (BuildContext context) => const PageD()),
+      ModalRoute.withName('/a'),
+    );
+  }
+}
+
+
+
diff --git a/lib/07/03/pages/page_d.dart b/lib/07/03/pages/page_d.dart
new file mode 100644
index 0000000..dda11df
--- /dev/null
+++ b/lib/07/03/pages/page_d.dart
@@ -0,0 +1,22 @@
+import 'package:flutter/material.dart';
+import 'package:iroute/06/02/pages/page_a.dart';
+
+class PageD extends StatelessWidget {
+  const PageD({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    const Color bgColor = Color(0xffFFCCFF);
+
+    return Scaffold(
+      backgroundColor: bgColor,
+      appBar: AppBar(
+        title: const Text('D'),
+        backgroundColor: bgColor,
+      ),
+      body:  Center(
+        child: const Text('到达终点'),
+      ),
+    );
+  }
+}