diff --git a/packages/you_flutter/lib/src/note/note.dart b/packages/you_flutter/lib/src/note/note.dart
index 99cee924..40fa6a15 100644
--- a/packages/you_flutter/lib/src/note/note.dart
+++ b/packages/you_flutter/lib/src/note/note.dart
@@ -23,11 +23,12 @@ base class ToNote extends To {
     NoteBuilder? page,
     NoteBuilder? notFound,
     NoteLayoutBuilder? layout,
-    super.children = const [],
+    List<ToNote> children = const [],
   }) : super(
           page: page == null ? null : (context) => _build(context, page),
           notFound: notFound == null ? null : (context) => _build(context, notFound),
           layout: layout == null ? null : (context, child) => layout(context, child as NoteMixin),
+          children: children,
         );
 
   static NoteMixin _build(BuildContext context, NoteBuilder page) {
diff --git a/packages/you_flutter/lib/src/router.dart b/packages/you_flutter/lib/src/router.dart
index 451725c5..d57dc81b 100644
--- a/packages/you_flutter/lib/src/router.dart
+++ b/packages/you_flutter/lib/src/router.dart
@@ -153,25 +153,6 @@ enum ToPartType {
 /// To == go_router.GoRoute
 /// 官方的go_router内部略显复杂，且没有我们想要的layout等功能，所以自定一个简化版的to_router
 base class To {
-  /// part may be a template
-  /// /[user]/[repository]
-  ///    - /dart-lang/sdk    => {"user":"dart-lang","repository":"sdk"}
-  ///    - /flutter/flutter  => {"user":"flutter","repository":"flutter"}
-  @nonVirtual
-  final String part;
-
-  late final String _name;
-  late final ToPartType _type;
-
-  late To _parent = this;
-
-  @nonVirtual
-  final List<To> children;
-
-  final PageBodyBuilder? _page;
-  final PageBodyBuilder? _notFound;
-  final PageLayoutBuilder? _layout;
-
   // TODO P1 root Node的part是routes，有问题！
   To(
     this.part, {
@@ -192,6 +173,26 @@ base class To {
     }
   }
 
+  /// part may be a template
+  /// /[user]/[repository]
+  ///    - /dart-lang/sdk    => {"user":"dart-lang","repository":"sdk"}
+  ///    - /flutter/flutter  => {"user":"flutter","repository":"flutter"}
+  @nonVirtual
+  final String part;
+
+  late final String _name;
+  late final ToPartType _type;
+
+  late To _parent = this;
+
+  @nonVirtual
+  final List<To> children;
+
+  final PageBodyBuilder? _page;
+  final PageBodyBuilder? _notFound;
+  final PageLayoutBuilder? _layout;
+
+  @nonVirtual
   To get parent => _parent;
 
   @nonVirtual