diff --git a/Ink Canvas/Windows/RandWindow.xaml b/Ink Canvas/Windows/RandWindow.xaml
index 2cd9cf6..d567f42 100644
--- a/Ink Canvas/Windows/RandWindow.xaml	
+++ b/Ink Canvas/Windows/RandWindow.xaml	
@@ -12,19 +12,19 @@
     <Border Background="#F0F3F9" CornerRadius="10" BorderThickness="1" BorderBrush="#0066BF" Margin="0" ClipToBounds="True">
         <Canvas>
             <Image Source="/Resources/hatsune-miku1.png" Width="300" Canvas.Bottom="-140" Canvas.Left="-48" Canvas.Top="314"></Image>
-            <Grid Canvas.Left="0" Canvas.Right="0" Canvas.Top="0" Canvas.Bottom="0" Width="900" Height="300">
+            <Grid Canvas.Left="0" Canvas.Right="0" Canvas.Top="0" Canvas.Bottom="0" Width="900" Height="309" HorizontalAlignment="Center" VerticalAlignment="Top">
                 <Grid.ColumnDefinitions>
                     <ColumnDefinition Width="1.8*"/>
                     <ColumnDefinition Width="1*"/>
                 </Grid.ColumnDefinitions>
                 <Viewbox HorizontalAlignment="Center" Margin="20,0">
                     <ui:SimpleStackPanel Orientation="Horizontal" Spacing="50" MinHeight="470">
-                        <Label Name="LabelOutput" FontSize="110" Content="" Block.TextAlignment="Center" HorizontalAlignment="Center" VerticalAlignment="Center"/>
-                        <Label Name="LabelOutput2" FontSize="110" Visibility="Collapsed" Content="" Block.TextAlignment="Center" HorizontalAlignment="Center" VerticalAlignment="Center"/>
-                        <Label Name="LabelOutput3" FontSize="110" Visibility="Collapsed" Content="" Block.TextAlignment="Center" HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                        <Label Name="LabelOutput" FontSize="130" Content="" Block.TextAlignment="Center" HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                        <Label Name="LabelOutput2" FontSize="130" Visibility="Collapsed" Content="" Block.TextAlignment="Center" HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                        <Label Name="LabelOutput3" FontSize="130" Visibility="Collapsed" Content="" Block.TextAlignment="Center" HorizontalAlignment="Center" VerticalAlignment="Center"/>
                     </ui:SimpleStackPanel>
                 </Viewbox>
-                <ui:SimpleStackPanel Spacing="50" Grid.Column="1" HorizontalAlignment="Left" VerticalAlignment="Center">
+                <ui:SimpleStackPanel Spacing="50" Grid.Column="1" HorizontalAlignment="Left" VerticalAlignment="Center" Opacity="1" Name="PeopleControlPane">
                     <StackPanel Orientation="Horizontal">
                         <Border x:Name="BorderBtnMinus" MouseUp="BorderBtnMinus_MouseUp" Background="#FBFBFD" Height="70" Width="70" CornerRadius="100">
                             <Border.Effect>
@@ -34,7 +34,7 @@
                                 <ui:SymbolIcon Symbol="Remove" Foreground="Black"/>
                             </Viewbox>
                         </Border>
-                        <Label Name="LabelNumberCount" Content="1" FontFamily="Segeo UI" FontSize="55" Margin="30"/>
+                        <TextBlock Name="LabelNumberCount" Text="1" FontFamily="Consolas" FontSize="55" Margin="10" Width="80" TextAlignment="Center"/>
                         <Border x:Name="BorderBtnAdd" MouseUp="BorderBtnAdd_MouseUp" Background="#FBFBFD" Height="70" Width="70" CornerRadius="100">
                             <Border.Effect>
                                 <DropShadowEffect Direction="0" ShadowDepth="0" Opacity="0.15" BlurRadius="3"/>
diff --git a/Ink Canvas/Windows/RandWindow.xaml.cs b/Ink Canvas/Windows/RandWindow.xaml.cs
index 95527e8..a73d6ec 100644
--- a/Ink Canvas/Windows/RandWindow.xaml.cs	
+++ b/Ink Canvas/Windows/RandWindow.xaml.cs	
@@ -22,6 +22,8 @@ namespace Ink_Canvas {
         public RandWindow(bool IsAutoClose) {
             InitializeComponent();
             isAutoClose = IsAutoClose;
+            PeopleControlPane.Opacity = 0.4;
+            PeopleControlPane.IsHitTestVisible = false;
 
             new Thread(new ThreadStart(() => {
                 Thread.Sleep(100);
@@ -40,21 +42,29 @@ namespace Ink_Canvas {
         public List<string> Names = new List<string>();
 
         private void BorderBtnAdd_MouseUp(object sender, MouseButtonEventArgs e) {
-            if (TotalCount >= PeopleCount) return;
+            if (RandMaxPeopleOneTime == -1 && TotalCount >= PeopleCount) return;
+            if (RandMaxPeopleOneTime != -1 && TotalCount >= RandMaxPeopleOneTime) return;
             TotalCount++;
-            LabelNumberCount.Content = TotalCount.ToString();
+            LabelNumberCount.Text = TotalCount.ToString();
             SymbolIconStart.Symbol = Symbol.People;
+            BorderBtnAdd.Opacity = 1;
+            BorderBtnMinus.Opacity = 1;
         }
 
         private void BorderBtnMinus_MouseUp(object sender, MouseButtonEventArgs e) {
             if (TotalCount < 2) return;
             TotalCount--;
-            LabelNumberCount.Content = TotalCount.ToString();
+            LabelNumberCount.Text = TotalCount.ToString();
             if (TotalCount == 1) {
                 SymbolIconStart.Symbol = Symbol.Contact;
             }
         }
 
+        public int RandWaitingTimes = 20;
+        public int RandWaitingThreadSleepTime = 50;
+        public int RandMaxPeopleOneTime = 10;
+        public int RandDoneAutoCloseWaitTime = 2500;
+
         private void BorderBtnRand_MouseUp(object sender, MouseButtonEventArgs e) {
             Random random = new Random();// randSeed + DateTime.Now.Millisecond / 10 % 10);
             string outputString = "";
@@ -66,7 +76,7 @@ namespace Ink_Canvas {
             BorderBtnRandCover.Visibility = Visibility.Visible;
 
             new Thread(new ThreadStart(() => {
-                for (int i = 0; i < 5; i++) {
+                for (int i = 0; i < RandWaitingTimes; i++) {
                     int rand = random.Next(1, PeopleCount + 1);
                     while (rands.Contains(rand)) {
                         rand = random.Next(1, PeopleCount + 1);
@@ -81,7 +91,7 @@ namespace Ink_Canvas {
                         }
                     });
 
-                    Thread.Sleep(150);
+                    Thread.Sleep(RandWaitingThreadSleepTime);
                 }
 
                 rands = new List<int>();
@@ -139,8 +149,10 @@ namespace Ink_Canvas {
 
                     if (isAutoClose) {
                         new Thread(new ThreadStart(() => {
-                            Thread.Sleep(1500);
+                            Thread.Sleep(RandDoneAutoCloseWaitTime);
                             Application.Current.Dispatcher.Invoke(() => {
+                                PeopleControlPane.Opacity = 1;
+                                PeopleControlPane.IsHitTestVisible = true;
                                 Close();
                             });
                         })).Start();