diff --git a/VPet-Simulator.Windows.Interface/GameSave_v2.cs b/VPet-Simulator.Windows.Interface/GameSave_v2.cs
index 58c8ad6..68fcba9 100644
--- a/VPet-Simulator.Windows.Interface/GameSave_v2.cs
+++ b/VPet-Simulator.Windows.Interface/GameSave_v2.cs
@@ -10,7 +10,9 @@ using System.Security.Cryptography;
 using System.Security.Policy;
 using System.Text;
 using System.Threading.Tasks;
+using System.Xml.Linq;
 using VPet_Simulator.Core;
+using static System.Net.Mime.MediaTypeNames;
 
 namespace VPet_Simulator.Windows.Interface
 {
@@ -31,7 +33,7 @@ namespace VPet_Simulator.Windows.Interface
         {
             if (lps.FindLine("statistics") == null)
             {//尝试从老存档加载
-                Statistics = oldStatistics;
+                Statistics = oldStatistics ?? new Statistics();
             }
             else
             {
@@ -42,12 +44,30 @@ namespace VPet_Simulator.Windows.Interface
             long hash;
             if (vpet != null)
             {
-                GameSave = GameSave.Load(vpet);                
+                GameSave = GameSave.Load(vpet);
                 hash = vpet.GetInt64("hash");
                 if (vpet.Remove("hash"))
                 {
-                    HashCheck = vpet.GetLongHashCode() == hash;
                     nohashcheck = false;
+                    try
+                    {
+                        using (MD5 md5 = MD5.Create())
+                        {
+                            long hs = BitConverter.ToInt64(md5.ComputeHash(Encoding.UTF8.GetBytes(vpet.Name)), 0)
+                                * 2 + BitConverter.ToInt64(md5.ComputeHash(Encoding.UTF8.GetBytes(vpet.info)), 0)
+                                * 3 + BitConverter.ToInt64(md5.ComputeHash(Encoding.UTF8.GetBytes(vpet.text)), 0) * 4;
+                            foreach (ISub su in vpet.ToList())
+                            {
+                                hs += BitConverter.ToInt64(md5.ComputeHash(Encoding.UTF8.GetBytes(su.Name)), 0) * 2
+                                    + BitConverter.ToInt64(md5.ComputeHash(Encoding.UTF8.GetBytes(su.Info)), 0) * 3;
+                            }
+                            HashCheck = hs == hash;
+                        }
+                    }
+                    catch
+                    {
+                        nohashcheck = true;
+                    }
                 }
             }
             else if (oldGameSave != null)
diff --git a/VPet-Simulator.Windows.Interface/Setting.cs b/VPet-Simulator.Windows.Interface/Setting.cs
index 4a87c95..2f966d9 100644
--- a/VPet-Simulator.Windows.Interface/Setting.cs
+++ b/VPet-Simulator.Windows.Interface/Setting.cs
@@ -145,7 +145,7 @@ namespace VPet_Simulator.Windows.Interface
         /// </summary>
         public int BackupSaveMaxNum
         {
-            get => Math.Max(GetInt("bakupsave", 30), 1);
+            get => Math.Max(GetInt("bakupsave", 50), 1);
             set => SetInt("bakupsave", value);
         }
         /// <summary>
diff --git a/VPet-Simulator.Windows/VPet-Simulator.Windows.csproj b/VPet-Simulator.Windows/VPet-Simulator.Windows.csproj
index 9325579..1097547 100644
--- a/VPet-Simulator.Windows/VPet-Simulator.Windows.csproj
+++ b/VPet-Simulator.Windows/VPet-Simulator.Windows.csproj
@@ -125,10 +125,6 @@
 		<Resource Include="Res\remixicon.ttf" />
 		<Resource Include="vpeticon.ico" />
 	</ItemGroup>
-	<ItemGroup>
-		<ProjectReference Include="..\VPet-Simulator.Core\VPet-Simulator.Core.csproj" />
-		<ProjectReference Include="..\VPet-Simulator.Windows.Interface\VPet-Simulator.Windows.Interface.csproj" />
-	</ItemGroup>
 	<ItemGroup>
 		<Compile Update="Properties\Settings.Designer.cs">
 			<DesignTimeSharedInput>True</DesignTimeSharedInput>
@@ -242,4 +238,8 @@
 		<PackageReference Include="Panuon.WPF" Version="1.0.3" />
 		<PackageReference Include="Panuon.WPF.UI" Version="1.1.16.8" />
 	</ItemGroup>
+	<ItemGroup>
+	  <ProjectReference Include="..\VPet-Simulator.Core\VPet-Simulator.Core.csproj" />
+	  <ProjectReference Include="..\VPet-Simulator.Windows.Interface\VPet-Simulator.Windows.Interface.csproj" />
+	</ItemGroup>
 </Project>
\ No newline at end of file