diff --git a/Ink Canvas/Windows/CountdownTimerWindow.xaml b/Ink Canvas/Windows/CountdownTimerWindow.xaml
index a361e609..1a8bfe8e 100644
--- a/Ink Canvas/Windows/CountdownTimerWindow.xaml	
+++ b/Ink Canvas/Windows/CountdownTimerWindow.xaml	
@@ -12,14 +12,7 @@
         Title="Ink Canvas 画板 - 计时器" Height="700" Width="1100">
     <Border Background="#F0F3F9" CornerRadius="10" BorderThickness="1" BorderBrush="#0066BF" Margin="60">
         <Grid>
-            <TextBlock x:Name="TbCurrentTime" MouseDown="BtnMinimal_OnMouseUp" Visibility="Collapsed" FontSize="56" FontWeight="Black" HorizontalAlignment="Center" VerticalAlignment="Center" Text="00:00:00">
-                <TextBlock.Style>
-                    <Style TargetType="TextBlock" BasedOn="{x:Null}">
-                        <Setter Property="TextWrapping" Value="NoWrap" />
-                        <Setter Property="TextTrimming" Value="None" />
-                    </Style>
-                </TextBlock.Style>
-            </TextBlock>
+            <TextBlock x:Name="TbCurrentTime" MouseDown="BtnMinimal_OnMouseUp" Visibility="Collapsed" FontSize="56" FontWeight="Black" HorizontalAlignment="Center" VerticalAlignment="Center" />
             <Border MouseMove="WindowDragMove" Visibility="{Binding ElementName=TbCurrentTime, Path=Visibility}" Width="64" Height="15" CornerRadius="8" Background="Gray" Margin="0,0,0,5" HorizontalAlignment="Center" VerticalAlignment="Bottom" />
             <Viewbox x:Name="BigViewController" Margin="20,20,20,20">
                 <Grid Height="180" Width="200">
@@ -31,11 +24,23 @@
                                    Margin="0,0,0,0" Visibility="Collapsed"
                                    Foreground="#5B5D5F"
                                    Text="00" FontSize="26"/>
-                        <TextBlock Name="TextControlHour" Text="{Binding ElementName=TextBlockHour, Path=Text}"
-                                   FontFamily="{Binding ElementName=TextBlockHour, Path=FontFamily}"
-                                   Foreground="{Binding ElementName=TextBlockHour, Path=Foreground}"
-                                   FontSize="{Binding ElementName=TextBlockHour, Path=FontSize}"
-                                   FontWeight="SemiBold" HorizontalAlignment="Center"/>
+                        <ItemsControl Name="TextControlHour" ItemsSource="{Binding ElementName=TextBlockHour, Path=Text}">
+                            <ItemsControl.ItemsPanel>
+                                <ItemsPanelTemplate>
+                                    <StackPanel Orientation="Horizontal" />
+                                </ItemsPanelTemplate>
+                            </ItemsControl.ItemsPanel>
+                            <ItemsControl.ItemTemplate>
+                                <DataTemplate>
+                                    <Grid Width="14">
+                                        <TextBlock Text="{Binding}" HorizontalAlignment="Center" FontWeight="SemiBold"
+                                                   Foreground="{Binding ElementName=TextBlockHour, Path=Foreground}"
+                                                   FontFamily="{Binding ElementName=TextBlockHour, Path=FontFamily}"
+                                                   FontSize="{Binding ElementName=TextBlockHour, Path=FontSize}"/>
+                                    </Grid>
+                                </DataTemplate>
+                            </ItemsControl.ItemTemplate>
+                        </ItemsControl>
                         <Grid Name="GridAdjustHour" Visibility="Visible" Margin="-29,-30,0,-30" Width="29">
                             <ui:SimpleStackPanel Spacing="2">
                                 <Button Height="13" Width="{Binding ElementName=GridAdjustHour, Path=ActualWidth}" Click="Button_Click_1">
@@ -66,11 +71,23 @@
                                    Margin="0,0,0,0" Visibility="Collapsed"
                                    Foreground="{Binding ElementName=TextBlockHour, Path=Foreground}"
                                    Text="01" FontSize="26"/>
-                        <TextBlock Name="TextControlMinute" Text="{Binding ElementName=TextBlockMinute, Path=Text}"
-                                   FontFamily="{Binding ElementName=TextBlockMinute, Path=FontFamily}"
-                                   Foreground="{Binding ElementName=TextBlockMinute, Path=Foreground}"
-                                   FontSize="{Binding ElementName=TextBlockMinute, Path=FontSize}"
-                                   FontWeight="SemiBold" HorizontalAlignment="Center"/>
+                        <ItemsControl Name="TextControlMinute" ItemsSource="{Binding ElementName=TextBlockMinute, Path=Text}">
+                            <ItemsControl.ItemsPanel>
+                                <ItemsPanelTemplate>
+                                    <StackPanel Orientation="Horizontal" />
+                                </ItemsPanelTemplate>
+                            </ItemsControl.ItemsPanel>
+                            <ItemsControl.ItemTemplate>
+                                <DataTemplate>
+                                    <Grid Width="14">
+                                        <TextBlock Text="{Binding}" HorizontalAlignment="Center" FontWeight="SemiBold"
+                                                   Foreground="{Binding ElementName=TextBlockMinute, Path=Foreground}"
+                                                   FontFamily="{Binding ElementName=TextBlockMinute, Path=FontFamily}"
+                                                   FontSize="{Binding ElementName=TextBlockMinute, Path=FontSize}"/>
+                                    </Grid>
+                                </DataTemplate>
+                            </ItemsControl.ItemTemplate>
+                        </ItemsControl>
                         <Grid Visibility="{Binding ElementName=GridAdjustHour, Path=Visibility}" Margin="-29,-30,0,-30" Width="29">
                             <ui:SimpleStackPanel Spacing="2">
                                 <Button Height="13" Width="{Binding ElementName=GridAdjustHour, Path=ActualWidth}" Click="Button_Click_5">
@@ -113,11 +130,23 @@
                                    Margin="0,0,0,0" Visibility="Collapsed"
                                    Foreground="{Binding ElementName=TextBlockHour, Path=Foreground}"
                                    Text="00" FontSize="26"/>
-                        <TextBlock Name="TextControlSecond" Text="{Binding ElementName=TextBlockSecond, Path=Text}"
-                                   FontFamily="{Binding ElementName=TextBlockSecond, Path=FontFamily}"
-                                   Foreground="{Binding ElementName=TextBlockSecond, Path=Foreground}"
-                                   FontSize="{Binding ElementName=TextBlockSecond, Path=FontSize}"
-                                   FontWeight="SemiBold" HorizontalAlignment="Center"/>
+                        <ItemsControl Name="TextControlSecond" ItemsSource="{Binding ElementName=TextBlockSecond, Path=Text}">
+                            <ItemsControl.ItemsPanel>
+                                <ItemsPanelTemplate>
+                                    <StackPanel Orientation="Horizontal" />
+                                </ItemsPanelTemplate>
+                            </ItemsControl.ItemsPanel>
+                            <ItemsControl.ItemTemplate>
+                                <DataTemplate>
+                                    <Grid Width="14">
+                                        <TextBlock Text="{Binding}" HorizontalAlignment="Center" FontWeight="SemiBold"
+                                               Foreground="{Binding ElementName=TextBlockSecond, Path=Foreground}"
+                                               FontFamily="{Binding ElementName=TextBlockSecond, Path=FontFamily}"
+                                               FontSize="{Binding ElementName=TextBlockSecond, Path=FontSize}"/>
+                                    </Grid>
+                                </DataTemplate>
+                            </ItemsControl.ItemTemplate>
+                        </ItemsControl>
                         <Grid Margin="-96.8,0,0,0" Width="96.8" Background="Transparent" MouseUp="Grid_MouseUp"/>
                         <Grid Visibility="{Binding ElementName=GridAdjustHour, Path=Visibility}" Margin="-29,-30,0,-30" Width="29">
                             <ui:SimpleStackPanel Spacing="2">
@@ -150,12 +179,12 @@
                         <Grid>
                             <Border x:Name="BtnStart" MouseUp="BtnStart_MouseUp" Background="#0066BF" Height="20" Width="20" CornerRadius="100">
                                 <Viewbox Margin="5">
-                                    <ui:FontIcon Name="FontIconStart" Glyph="&#xE768;" Foreground="White"/>
+                                    <ui:SymbolIcon Name="SymbolIconStart" Symbol="Play" Foreground="White"/>
                                 </Viewbox>
                             </Border>
                             <Border x:Name="BtnStartCover" Visibility="Collapsed" Background="#BFBFBF" Height="20" Width="20" CornerRadius="100">
                                 <Viewbox Margin="5">
-                                    <ui:FontIcon Glyph="{Binding ElementName=FontIconStart, Path=Glyph}" Foreground="White"/>
+                                    <ui:SymbolIcon Symbol="{Binding ElementName=SymbolIconStart, Path=Symbol}" Foreground="White"/>
                                 </Viewbox>
                             </Border>
                         </Grid>
@@ -165,12 +194,12 @@
                                     <DropShadowEffect Direction="0" ShadowDepth="0" Opacity="0.15" BlurRadius="3"/>
                                 </Border.Effect>
                                 <Viewbox Margin="5.5">
-                                    <ui:FontIcon Glyph="&#xE72C;" Foreground="Black"/>
+                                    <ui:SymbolIcon Symbol="Refresh" Foreground="Black"/>
                                 </Viewbox>
                             </Border>
                             <Border x:Name="BtnResetCover" Background="#F3F5F9" Height="20" Width="20" CornerRadius="100">
                                 <Viewbox Margin="5.5">
-                                    <ui:FontIcon Glyph="&#xE72C;" Foreground="#9D9D9E"/>
+                                    <ui:SymbolIcon Symbol="Refresh" Foreground="#9D9D9E"/>
                                 </Viewbox>
                             </Border>
                         </Grid>
@@ -186,7 +215,7 @@
                             <DropShadowEffect Direction="0" ShadowDepth="0" Opacity="0.1" BlurRadius="3"/>
                         </Border.Effect>
                         <Viewbox Margin="5.5">
-                            <TextBlock Name="FontIconMinimal" Text="&#xE7B3;" Foreground="Black" FontFamily="Segoe MDL2 Assets" FontSize="12" />
+                            <ui:SymbolIcon Name="SymbolIconMinimal" Symbol="HideBcc" Foreground="Black"/>
                         </Viewbox>
                     </Border>
                     <Border x:Name="BtnFullscreen" MouseUp="BtnFullscreen_MouseUp" HorizontalAlignment="Right" VerticalAlignment="Bottom"
@@ -196,7 +225,7 @@
                             <DropShadowEffect Direction="0" ShadowDepth="0" Opacity="0.1" BlurRadius="3"/>
                         </Border.Effect>
                         <Viewbox Margin="5.5">
-                            <TextBlock Name="FontIconFullscreen" Text="&#xE740;" Foreground="Black" FontFamily="Segoe MDL2 Assets" FontSize="12" />
+                            <ui:SymbolIcon Name="SymbolIconFullscreen" Symbol="FullScreen" Foreground="Black"/>
                         </Viewbox>
                     </Border>
                     <Border x:Name="BtnClose" MouseUp="BtnClose_MouseUp" HorizontalAlignment="Right" VerticalAlignment="Bottom"
@@ -206,7 +235,7 @@
                             <DropShadowEffect Direction="0" ShadowDepth="0" Opacity="0.1" BlurRadius="3"/>
                         </Border.Effect>
                         <Viewbox Margin="5.5">
-                            <TextBlock Text="&#xE8BB;" Foreground="White" FontFamily="Segoe MDL2 Assets" FontSize="12" />
+                            <ui:SymbolIcon Symbol="Clear"  Foreground="White"/>
                         </Viewbox>
                     </Border>
                 </ui:SimpleStackPanel>
diff --git a/Ink Canvas/Windows/CountdownTimerWindow.xaml.cs b/Ink Canvas/Windows/CountdownTimerWindow.xaml.cs
index ce679ebb..31e190ce 100644
--- a/Ink Canvas/Windows/CountdownTimerWindow.xaml.cs	
+++ b/Ink Canvas/Windows/CountdownTimerWindow.xaml.cs	
@@ -1,16 +1,11 @@
 using Ink_Canvas.Helpers;
 using System;
-using System.ComponentModel;
 using System.Media;
 using System.Timers;
 using System.Windows;
-using System.Windows.Forms;
 using System.Windows.Input;
 using System.Windows.Interop;
 using System.Windows.Media;
-using Application = System.Windows.Application;
-using MouseEventArgs = System.Windows.Input.MouseEventArgs;
-using Timer = System.Timers.Timer;
 
 namespace Ink_Canvas
 {
@@ -56,7 +51,7 @@ namespace Ink_Canvas
                     TextBlockSecond.Text = "00";
                     timer.Stop();
                     isTimerRunning = false;
-                    FontIconStart.Glyph = "&#xE768;";
+                    SymbolIconStart.Symbol = iNKORE.UI.WPF.Modern.Controls.Symbol.Play;
                     BtnStartCover.Visibility = Visibility.Visible;
                     TextBlockHour.Foreground = new SolidColorBrush(StringToColor("#FF5B5D5F"));
                     BorderStopTime.Visibility = Visibility.Collapsed;
@@ -75,23 +70,23 @@ namespace Ink_Canvas
 
         SoundPlayer player = new SoundPlayer();
 
-        int hour;
+        int hour = 0;
         int minute = 1;
-        int second;
+        int second = 0;
         int totalSeconds = 60;
 
         DateTime startTime = DateTime.Now;
         DateTime pauseTime = DateTime.Now;
 
-        bool isTimerRunning;
-        bool isPaused;
+        bool isTimerRunning = false;
+        bool isPaused = false;
 
         Timer timer = new Timer();
 
         private void Grid_MouseUp(object sender, MouseButtonEventArgs e)
         {
             if (isTimerRunning) return;
-            if (ProcessBarTime.Visibility == Visibility.Visible && !isTimerRunning)
+            if (ProcessBarTime.Visibility == Visibility.Visible && isTimerRunning == false)
             {
                 ProcessBarTime.Visibility = Visibility.Collapsed;
                 GridAdjustHour.Visibility = Visibility.Visible;
@@ -207,12 +202,12 @@ namespace Ink_Canvas
             if (WindowState == WindowState.Normal)
             {
                 WindowState = WindowState.Maximized;
-                FontIconFullscreen.Text = "&#xE73F;";
+                SymbolIconFullscreen.Symbol = iNKORE.UI.WPF.Modern.Controls.Symbol.BackToWindow;
             }
             else
             {
                 WindowState = WindowState.Normal;
-                FontIconFullscreen.Text = "&#xE740;";
+                SymbolIconFullscreen.Symbol = iNKORE.UI.WPF.Modern.Controls.Symbol.FullScreen;
             }
         }
 
@@ -227,6 +222,7 @@ namespace Ink_Canvas
                 BtnStartCover.Visibility = Visibility.Collapsed;
                 BorderStopTime.Visibility = Visibility.Collapsed;
                 TextBlockHour.Foreground = new SolidColorBrush(StringToColor("#FF5B5D5F"));
+                return;
             }
             else if (isTimerRunning && isPaused)
             {
@@ -237,7 +233,7 @@ namespace Ink_Canvas
                 BtnStartCover.Visibility = Visibility.Collapsed;
                 BorderStopTime.Visibility = Visibility.Collapsed;
                 TextBlockHour.Foreground = new SolidColorBrush(StringToColor("#FF5B5D5F"));
-                FontIconStart.Glyph = "&#xE768;";
+                SymbolIconStart.Symbol = iNKORE.UI.WPF.Modern.Controls.Symbol.Play;
                 isTimerRunning = false;
                 timer.Stop();
                 isPaused = false;
@@ -287,7 +283,7 @@ namespace Ink_Canvas
                 startTime += DateTime.Now - pauseTime;
                 ProcessBarTime.IsPaused = false;
                 TextBlockHour.Foreground = Brushes.Black;
-                FontIconStart.Glyph = "&#xE769;";
+                SymbolIconStart.Symbol = iNKORE.UI.WPF.Modern.Controls.Symbol.Pause;
                 isPaused = false;
                 timer.Start();
                 UpdateStopTime();
@@ -299,7 +295,7 @@ namespace Ink_Canvas
                 pauseTime = DateTime.Now;
                 ProcessBarTime.IsPaused = true;
                 TextBlockHour.Foreground = new SolidColorBrush(StringToColor("#FF5B5D5F"));
-                FontIconStart.Glyph = "&#xE768;";
+                SymbolIconStart.Symbol = iNKORE.UI.WPF.Modern.Controls.Symbol.Play;
                 BorderStopTime.Visibility = Visibility.Collapsed;
                 isPaused = true;
                 timer.Stop();
@@ -311,7 +307,7 @@ namespace Ink_Canvas
                 totalSeconds = ((hour * 60) + minute) * 60 + second;
                 ProcessBarTime.IsPaused = false;
                 TextBlockHour.Foreground = Brushes.Black;
-                FontIconStart.Glyph = "&#xE769;";
+                SymbolIconStart.Symbol = iNKORE.UI.WPF.Modern.Controls.Symbol.Pause;
                 BtnResetCover.Visibility = Visibility.Collapsed;
 
                 if (totalSeconds <= 10)
@@ -339,7 +335,7 @@ namespace Ink_Canvas
             }
         }
 
-        private void Window_Closing(object sender, CancelEventArgs e)
+        private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
         {
             isTimerRunning = false;
         }
@@ -349,7 +345,7 @@ namespace Ink_Canvas
             Close();
         }
 
-        private bool _isInCompact;
+        private bool _isInCompact = false;
 
         private void BtnMinimal_OnMouseUp(object sender, MouseButtonEventArgs e)
         {
@@ -363,13 +359,12 @@ namespace Ink_Canvas
                 // Set to center
                 double dpiScaleX = 1, dpiScaleY = 1;
                 PresentationSource source = PresentationSource.FromVisual(this);
-                if (source != null)
-                {
+                if (source != null) {
                     dpiScaleX = source.CompositionTarget.TransformToDevice.M11;
                     dpiScaleY = source.CompositionTarget.TransformToDevice.M22;
                 }
                 IntPtr windowHandle = new WindowInteropHelper(this).Handle;
-                Screen screen = Screen.FromHandle(windowHandle);
+                System.Windows.Forms.Screen screen = System.Windows.Forms.Screen.FromHandle(windowHandle);
                 double screenWidth = screen.Bounds.Width / dpiScaleX, screenHeight = screen.Bounds.Height / dpiScaleY;
                 Left = (screenWidth / 2) - (Width / 2);
                 Top = (screenHeight / 2) - (Height / 2);
diff --git a/Ink Canvas/Windows/OperatingGuideWindow.xaml b/Ink Canvas/Windows/OperatingGuideWindow.xaml
index d8f84c51..67c81734 100644
--- a/Ink Canvas/Windows/OperatingGuideWindow.xaml	
+++ b/Ink Canvas/Windows/OperatingGuideWindow.xaml	
@@ -71,7 +71,7 @@
                     </Viewbox>
                 </ui:SimpleStackPanel>
             </ScrollViewer>
-            <Viewbox Margin="20,20,20,20" HorizontalAlignment="Right">
+            <Viewbox Visibility="{Binding ElementName=BigViewController, Path=Visibility}" Margin="20,20,20,20" HorizontalAlignment="Right">
                 <ui:SimpleStackPanel Height="180" Orientation="Horizontal">
                     <Border x:Name="BtnFullscreen" MouseUp="BtnFullscreen_MouseUp" HorizontalAlignment="Right" VerticalAlignment="Bottom"
                             Margin="5"
@@ -80,7 +80,7 @@
                             <DropShadowEffect Direction="0" ShadowDepth="0" Opacity="0.1" BlurRadius="3"/>
                         </Border.Effect>
                         <Viewbox Margin="5.5">
-                            <TextBlock Name="FontIconFullscreen" Text="&#xE740;" Foreground="Black" FontFamily="Segoe MDL2 Assets" FontSize="12" />
+                            <ui:SymbolIcon Name="SymbolIconFullscreen" Symbol="FullScreen" Foreground="Black"/>
                         </Viewbox>
                     </Border>
                     <Border x:Name="BtnClose" MouseUp="BtnClose_MouseUp" HorizontalAlignment="Right" VerticalAlignment="Bottom"
@@ -90,7 +90,7 @@
                             <DropShadowEffect Direction="0" ShadowDepth="0" Opacity="0.1" BlurRadius="3"/>
                         </Border.Effect>
                         <Viewbox Margin="5.5">
-                            <TextBlock Text="&#xE8BB;" Foreground="White" FontFamily="Segoe MDL2 Assets" FontSize="12" />
+                            <ui:SymbolIcon Symbol="Clear"  Foreground="White"/>
                         </Viewbox>
                     </Border>
                 </ui:SimpleStackPanel>
diff --git a/Ink Canvas/Windows/OperatingGuideWindow.xaml.cs b/Ink Canvas/Windows/OperatingGuideWindow.xaml.cs
index 0da22c2e..3d48d677 100644
--- a/Ink Canvas/Windows/OperatingGuideWindow.xaml.cs	
+++ b/Ink Canvas/Windows/OperatingGuideWindow.xaml.cs	
@@ -25,22 +25,17 @@ namespace Ink_Canvas
             if (e.LeftButton == MouseButtonState.Pressed) DragMove();
         }
 
-        private void BtnFullscreen_MouseUp(object sender, MouseButtonEventArgs e)
-        {
-            if (WindowState == WindowState.Normal)
-            {
+        private void BtnFullscreen_MouseUp(object sender, MouseButtonEventArgs e) {
+            if (WindowState == WindowState.Normal) {
                 WindowState = WindowState.Maximized;
-                FontIconFullscreen.Text = "&#xE73F;";
-            }
-            else
-            {
+                SymbolIconFullscreen.Symbol = iNKORE.UI.WPF.Modern.Controls.Symbol.BackToWindow;
+            } else {
                 WindowState = WindowState.Normal;
-                FontIconFullscreen.Text = "&#xE740;";
+                SymbolIconFullscreen.Symbol = iNKORE.UI.WPF.Modern.Controls.Symbol.FullScreen;
             }
         }
 
-        private void SCManipulationBoundaryFeedback(object sender, ManipulationBoundaryFeedbackEventArgs e)
-        {
+        private void SCManipulationBoundaryFeedback(object sender, ManipulationBoundaryFeedbackEventArgs e) {
             e.Handled = true;
         }
     }
diff --git a/Ink Canvas/obj/Debug/net472/InkCanvasForClass.csproj.AssemblyReference.cache b/Ink Canvas/obj/Debug/net472/InkCanvasForClass.csproj.AssemblyReference.cache
index 44b9fc73..771b061a 100644
Binary files a/Ink Canvas/obj/Debug/net472/InkCanvasForClass.csproj.AssemblyReference.cache and b/Ink Canvas/obj/Debug/net472/InkCanvasForClass.csproj.AssemblyReference.cache differ