diff --git a/lib/main.dart b/lib/main.dart
index 6f140333..fb250a79 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -107,7 +107,7 @@ class _MyAppState extends State<MyApp> {
           GlobalCupertinoLocalizations.delegate,
         ],
         supportedLocales: const [
-          Locale('zh', ''),
+          Locale('zh', 'CN'),
         ],
         navigatorKey: alice.getNavigatorKey(),
         title: Platform.isIOS || Platform.isMacOS ? "XDYou" : 'Traintime PDA',
diff --git a/lib/page/classtable/class_page/classtable_page.dart b/lib/page/classtable/class_page/classtable_page.dart
index 2c589d81..0a3bc1c5 100644
--- a/lib/page/classtable/class_page/classtable_page.dart
+++ b/lib/page/classtable/class_page/classtable_page.dart
@@ -16,6 +16,7 @@ import 'package:watermeter/page/classtable/class_not_arranged/not_arranged_class
 import 'package:watermeter/repository/network_session.dart';
 import 'package:watermeter/repository/preference.dart' as preference;
 import 'package:share_plus/share_plus.dart';
+import 'package:file_picker/file_picker.dart';
 
 class ClassTablePage extends StatefulWidget {
   const ClassTablePage({super.key});
@@ -130,25 +131,43 @@ class _ClassTablePageState extends State<ClassTablePage>
                       break;
                     case 'D':
                       try {
-                        String now = Jiffy.now().format(
-                          pattern: "yyyyMMddTHHmmss",
-                        );
-                        String semester = classTableState.semesterCode;
-                        String tempPath = await getTemporaryDirectory()
-                            .then((value) => value.path);
-                        File file = File(
-                          "$tempPath/classtable-$now-$semester.ics",
-                        );
-                        if (!(await file.exists())) {
-                          await file.create();
+                        String fileName = "classtable-"
+                            "${Jiffy.now().format(pattern: "yyyyMMddTHHmmss")}-"
+                            "${classTableState.semesterCode}.ics";
+                        if (Platform.isLinux ||
+                            Platform.isMacOS ||
+                            Platform.isWindows) {
+                          String? resultFilePath =
+                              await FilePicker.platform.saveFile(
+                            dialogTitle: "保存日历文件到...",
+                            fileName: fileName,
+                            allowedExtensions: ["ics"],
+                            lockParentWindow: true,
+                          );
+                          if (resultFilePath != null) {
+                            File file = File(resultFilePath);
+                            if (!(await file.exists())) {
+                              await file.create();
+                            }
+                            await file
+                                .writeAsString(classTableState.iCalenderStr);
+                          }
+                        } else {
+                          String tempPath = await getTemporaryDirectory()
+                              .then((value) => value.path);
+                          File file = File("$tempPath/$fileName");
+                          if (!(await file.exists())) {
+                            await file.create();
+                          }
+                          await file
+                              .writeAsString(classTableState.iCalenderStr);
+                          await Share.shareXFiles(
+                            [XFile("$tempPath/$fileName.ics")],
+                            sharePositionOrigin:
+                                box!.localToGlobal(Offset.zero) & box.size,
+                          );
+                          await file.delete();
                         }
-                        await file.writeAsString(classTableState.iCalenderStr);
-                        await Share.shareXFiles(
-                          [XFile("$tempPath/classtable-$now-$semester.ics")],
-                          sharePositionOrigin:
-                              box!.localToGlobal(Offset.zero) & box.size,
-                        );
-                        await file.delete();
                         Fluttertoast.showToast(msg: "应该保存成功");
                       } on FileSystemException {
                         Fluttertoast.showToast(msg: "文件创建失败，保存取消");
diff --git a/lib/themes/demo_blue.dart b/lib/themes/demo_blue.dart
index fc30d535..b63a63da 100644
--- a/lib/themes/demo_blue.dart
+++ b/lib/themes/demo_blue.dart
@@ -1,6 +1,7 @@
 // Copyright 2023 BenderBlog Rodriguez and contributors.
 // SPDX-License-Identifier: MPL-2.0
 
+import 'package:chinese_font_library/chinese_font_library.dart';
 import 'package:flutter/material.dart';
 
 const demoBlueModeName = [
@@ -28,7 +29,7 @@ final demoBlue = ThemeData(
     secondaryContainer: const Color.fromRGBO(226, 232, 243, 1),
     onSecondaryContainer: const Color.fromRGBO(49, 78, 122, 1),
   ),
-);
+).useSystemChineseFont(Brightness.light);
 
 final demoBlueDark = ThemeData(
   useMaterial3: true,
@@ -45,4 +46,4 @@ final demoBlueDark = ThemeData(
     secondaryContainer: const Color.fromRGBO(30, 30, 30, 1),
     onSecondaryContainer: const Color.fromRGBO(255, 255, 255, 1),
   ),
-);
+).useSystemChineseFont(Brightness.dark);
diff --git a/pubspec.lock b/pubspec.lock
index 5b8a15bf..cc226049 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -209,6 +209,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.0.3"
+  chinese_font_library:
+    dependency: "direct main"
+    description:
+      name: chinese_font_library
+      sha256: "2a432695b8a8fec63dad9547f64aa88260ca8f9481e02701c92dc189f090fafe"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
   chopper:
     dependency: transitive
     description:
@@ -397,10 +405,10 @@ packages:
     dependency: "direct main"
     description:
       name: file_picker
-      sha256: "4e42aacde3b993c5947467ab640882c56947d9d27342a5b6f2895b23956954a6"
+      sha256: caa6bc229eab3e32eb2f37b53a5f9d22a6981474afd210c512a7546c1e1a04f6
       url: "https://pub.dev"
     source: hosted
-    version: "6.1.1"
+    version: "6.2.0"
   fixnum:
     dependency: transitive
     description:
diff --git a/pubspec.yaml b/pubspec.yaml
index 6fa3860a..d78b821e 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -18,7 +18,6 @@ dependencies:
   dio_cookie_manager: ^3.0.0
   cookie_jar: ^4.0.3
   path_provider: ^2.0.11
-  file_picker: ^6.1.1
   json_annotation: ^4.8.0
   share_plus: ^7.2.1
   # Deal with html
@@ -58,6 +57,8 @@ dependencies:
   flutter_layout_grid: ^2.0.4
   flutter_staggered_grid_view: ^0.7.0
   styled_widget: ^0.4.1
+  file_picker: ^6.2.0
+  chinese_font_library: ^1.1.0
   ming_cute_icons: ^0.0.1
   timelines: ^0.1.0
   # Homepage Widget