diff --git a/About.xaml.cs b/About.xaml.cs
index 691425f..6a6d2e1 100644
--- a/About.xaml.cs
+++ b/About.xaml.cs
@@ -52,18 +52,6 @@ namespace AnotherReplayReader
                     return h;
                 });
             }
-
-            _ = Auth.Id.ContinueWith(t => Dispatcher.Invoke(() =>
-            {
-                if (t.Result is { } id)
-                {
-                    _idBox.Text = id;
-                }
-                else
-                {
-                    _bottom.Visibility = Visibility.Collapsed;
-                }
-            }));
         }
 
         private void OnHyperlinkRequestNavigate(object sender, System.Windows.Navigation.RequestNavigateEventArgs e)
diff --git a/AnotherReplayReader.csproj b/AnotherReplayReader.csproj
index ad2bea9..b24878f 100644
--- a/AnotherReplayReader.csproj
+++ b/AnotherReplayReader.csproj
@@ -34,10 +34,10 @@
     <PackageReference Include="OxyPlot.Wpf" Version="2.1.0" />
     <PackageReference Include="Pfim" Version="0.10.1" />
     <PackageReference Include="System.Collections.Immutable" Version="5.0.0" />
+    <PackageReference Include="System.Text.Encoding.CodePages" Version="9.0.0-preview.7.24405.7" />
     <PackageReference Include="System.Text.Json" Version="5.0.2" />
   </ItemGroup>
   <ItemGroup>
-    <ProjectReference Include="..\AnotherReplayReader.PluginSystem\AnotherReplayReader.PluginSystem.csproj" />
   </ItemGroup>
   <ItemGroup>
     <Compile Update="Properties\Settings.Designer.cs">
@@ -54,14 +54,10 @@
   </ItemGroup>
   <Target Name="CustomAfterBuild" AfterTargets="Build">
     <ItemGroup>
-      <_FilesToMove Include="$(OutputPath)*.dll"/>
+      <_FilesToMove Include="$(OutputPath)*.dll" />
     </ItemGroup>
-    <Message Text="_FilesToMove: @(_FilesToMove->'%(Filename)%(Extension)')" Importance="high"/>
-    <Message Text="DestFiles:
-        @(_FilesToMove->'$(OutputPath)$(ProjectName)Data\%(Filename)%(Extension)')"
-             Importance="high"/>
-    <Move SourceFiles="@(_FilesToMove)"
-          DestinationFiles=
-          "@(_FilesToMove->'$(OutputPath)$(ProjectName)Data\%(Filename)%(Extension)')"/>
+    <Message Text="_FilesToMove: @(_FilesToMove->'%(Filename)%(Extension)')" Importance="high" />
+    <Message Text="DestFiles:&#xD;&#xA;        @(_FilesToMove->'$(OutputPath)$(ProjectName)Data\%(Filename)%(Extension)')" Importance="high" />
+    <Move SourceFiles="@(_FilesToMove)" DestinationFiles="@(_FilesToMove->'$(OutputPath)$(ProjectName)Data\%(Filename)%(Extension)')" />
   </Target>
 </Project>
\ No newline at end of file
diff --git a/AnotherReplayReader.sln b/AnotherReplayReader.sln
index 74283e8..9a0686b 100644
--- a/AnotherReplayReader.sln
+++ b/AnotherReplayReader.sln
@@ -1,14 +1,10 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 16
-VisualStudioVersion = 16.0.30907.101
+# Visual Studio Version 17
+VisualStudioVersion = 17.10.34928.147
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "AnotherReplayReader", "AnotherReplayReader.csproj", "{A54AEAB3-D99C-4E29-8C47-3DFD5B1A0FDE}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "AnotherReplayReader.PlayerIdentity", "..\AnotherReplayReader.PlayerIdentity\AnotherReplayReader.PlayerIdentity.csproj", "{78678E57-CBA2-46E4-B764-4CB6E66EF156}"
-EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "AnotherReplayReader.PluginSystem", "..\AnotherReplayReader.PluginSystem\AnotherReplayReader.PluginSystem.csproj", "{0730D7D0-64A3-4F3F-8D8C-46E7676C659F}"
-EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -19,14 +15,6 @@ Global
 		{A54AEAB3-D99C-4E29-8C47-3DFD5B1A0FDE}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{A54AEAB3-D99C-4E29-8C47-3DFD5B1A0FDE}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{A54AEAB3-D99C-4E29-8C47-3DFD5B1A0FDE}.Release|Any CPU.Build.0 = Release|Any CPU
-		{78678E57-CBA2-46E4-B764-4CB6E66EF156}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{78678E57-CBA2-46E4-B764-4CB6E66EF156}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{78678E57-CBA2-46E4-B764-4CB6E66EF156}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{78678E57-CBA2-46E4-B764-4CB6E66EF156}.Release|Any CPU.Build.0 = Release|Any CPU
-		{0730D7D0-64A3-4F3F-8D8C-46E7676C659F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{0730D7D0-64A3-4F3F-8D8C-46E7676C659F}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{0730D7D0-64A3-4F3F-8D8C-46E7676C659F}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{0730D7D0-64A3-4F3F-8D8C-46E7676C659F}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/Apm/DataRow.cs b/Apm/DataRow.cs
index b39692f..6ee84e2 100644
--- a/Apm/DataRow.cs
+++ b/Apm/DataRow.cs
@@ -37,17 +37,14 @@ namespace AnotherReplayReader.Apm
 
         public static List<DataRow> GetList(ApmPlotter plotter,
                                             ApmPlotterFilterOptions options,
-                                            PlayerIdentity identity,
                                             TimeSpan begin,
                                             TimeSpan end,
                                             out int apmRowIndex)
         {
             // these commands should appear in this order by default
             var orderedCommands = new List<byte>();
-            orderedCommands.AddRange(RA3Commands.UnknownCommands);
-            orderedCommands.AddRange(RA3Commands.AutoCommands);
-            orderedCommands.AddRange(new byte[]
-            {
+            orderedCommands.AddRange(
+            [
                 0xF5,
                 0xF8,
                 0x2A,
@@ -83,7 +80,9 @@ namespace AnotherReplayReader.Apm
                 0x02,
                 0x0C,
                 0x10,
-            });
+            ]);
+            orderedCommands.AddRange(RA3Commands.AutoCommands);
+            orderedCommands.AddRange(RA3Commands.UnknownCommands);
 
             var dataList = new List<DataRow>
             {
@@ -108,13 +107,6 @@ namespace AnotherReplayReader.Apm
                 }
                 dataList.Add(new("存活状态（推测）", plotter.Players.Select(GetStatus)));
             }
-            if (plotter.Replay.Type is ReplayType.Lan && identity.IsUsable)
-            {
-                string GetIpAndName(Player player) => player.IsComputer
-                    ? "这是 AI"
-                    : identity.QueryRealNameAndIP(player.PlayerIp) ?? string.Empty;
-                dataList.Add(new("局域网 IP", plotter.Players.Select(GetIpAndName)));
-            }
             apmRowIndex = dataList.Count;
             // kill-death ratio
             if (plotter.Replay.Footer?.TryGetKillDeathRatios() is { } kdRatios)
diff --git a/ApmWindow.xaml b/ApmWindow.xaml
index 10a673a..6dfe615 100644
--- a/ApmWindow.xaml
+++ b/ApmWindow.xaml
@@ -68,13 +68,6 @@
         <DockPanel Grid.Row="1"
                    Margin="16,8,16,16">
             <DockPanel DockPanel.Dock="Top">
-                <Button x:Name="_setPlayerButton"
-                        DockPanel.Dock="Right"
-                        Content="设置玩家信息..."
-                        VerticalAlignment="Center"
-                        Padding="8,4"
-                        Visibility="Visible"
-                        Click="OnSetPlayerButtonClick" />
                 <Label x:Name="_label"
                        Grid.Column="1"
                        Margin="0"
diff --git a/ApmWindow.xaml.cs b/ApmWindow.xaml.cs
index d9bab29..99622ab 100644
--- a/ApmWindow.xaml.cs
+++ b/ApmWindow.xaml.cs
@@ -23,7 +23,6 @@ namespace AnotherReplayReader
     {
         public static readonly TimeSpan DefaultResolution = TimeSpan.FromSeconds(15);
         private readonly Regex _resolutionRegex = new(@"[^0-9]+");
-        private readonly PlayerIdentity _identity;
         private readonly Replay _replay;
         private readonly Task<ApmPlotter> _plotter;
         private readonly ApmWindowPlotController _plotController;
@@ -34,9 +33,8 @@ namespace AnotherReplayReader
         public bool SkipAutos { get; private set; } = true;
         public bool SkipClicks { get; private set; } = false;
 
-        public ApmWindow(Replay replay, PlayerIdentity identity)
+        public ApmWindow(Replay replay)
         {
-            _identity = identity;
             _replay = replay;
             _plotter = Task.Run(() => new ApmPlotter(replay));
             _plotController = new(this);
@@ -60,17 +58,6 @@ namespace AnotherReplayReader
 
         private async Task InitializeApmWindowData()
         {
-            if (_identity.IsUsable)
-            {
-                _setPlayerButton.IsEnabled = true;
-                _setPlayerButton.Visibility = Visibility.Visible;
-            }
-            else
-            {
-                _setPlayerButton.IsEnabled = false;
-                _setPlayerButton.Visibility = Visibility.Hidden;
-            }
-
             await FilterDataAsync(TimeSpan.MinValue, TimeSpan.MaxValue, true);
             _label.Content = "选择表格之后按 Ctrl+C 可以复制内容";
         }
@@ -94,7 +81,7 @@ namespace AnotherReplayReader
             var (dataList, plotData, replayLength, isPartial) = await Task.Run(async () =>
             {
                 var plotter = await _plotter.ConfigureAwait(false);
-                var list = DataRow.GetList(plotter, options, _identity, begin, end, out var apmIndex);
+                var list = DataRow.GetList(plotter, options, begin, end, out var apmIndex);
                 // avg apm
                 var avg = plotter.CalculateAverageApm(options);
                 // data for plotting and partial apm
@@ -190,12 +177,6 @@ namespace AnotherReplayReader
             PlotModel.Model = model;
         }
 
-        private void OnSetPlayerButtonClick(object sender, RoutedEventArgs e)
-        {
-            var window1 = new Window1(_identity);
-            window1.ShowDialog();
-        }
-
         private void OnTableMouseDoubleClick(object sender, MouseButtonEventArgs e)
         {
             _table.SelectAll();
diff --git a/Auth.cs b/Auth.cs
deleted file mode 100644
index aad436f..0000000
--- a/Auth.cs
+++ /dev/null
@@ -1,34 +0,0 @@
-using AnotherReplayReader.PluginSystem;
-using AnotherReplayReader.Utils;
-using System;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace AnotherReplayReader
-{
-    internal static class Auth
-    {
-        private static readonly TaskCompletionSource<Task<string?>> _source = new();
-        public static Task<string?> Id { get; } = _source.Task.Unwrap();
-
-        public static void LoadPlugin(IPlugin plugin)
-        {
-            var authService = plugin.CreateAuthService(RegistryUtils.RetrieveInHklm64, Cache.CacheDirectory);
-            authService.Id.ContinueWith(_source.TrySetResult);
-        }
-
-        public static async Task<byte[]?> IdAsKey()
-        {
-            var id = await Id.ConfigureAwait(false);
-            if (string.IsNullOrEmpty(id))
-            {
-                return null;
-            }
-            var bytes = Encoding.UTF8.GetBytes(id);
-            var destination = Enumerable.Repeat<byte>(0xEA, 24).ToArray();
-            Array.Copy(bytes, destination, Math.Min(bytes.Length, destination.Length));
-            return destination;
-        }
-    }
-}
diff --git a/ChineseEncoding.cs b/ChineseEncoding.cs
new file mode 100644
index 0000000..fb37330
--- /dev/null
+++ b/ChineseEncoding.cs
@@ -0,0 +1,179 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Numerics;
+using System.Text;
+
+namespace Ra3.BattleNet.Database.Utils;
+
+public static class ChineseEncoding
+{
+    private const int EncodedChineseTotalLength = 120;
+    private const int EncodedChineseChecksumLength = 3;
+    private const int EncodedChineseContentLength = EncodedChineseTotalLength - EncodedChineseChecksumLength;
+    private const int ChineseCodeSize = 13;
+    private const int ChineseCodeMask = 0b1111111111111;
+    private const int AsciiSectionSize = 0x80;
+    private const int Gb2312EucOffset = 0xA0;
+    private const int Gb2312RowWidth = 94;
+    private const int Gb2312LastRow = 87;
+    private const int Gb2312FirstUnassignedSectionBegin = 10;
+    private const int Gb2312FirstUnassignedSectionSize = 6;
+    private const int Gb2312SecondUnassignedSectionBegin = 88;
+    private const int Base64CodeSize = 6;
+    private const int Base64CodeMask = 0b111111;
+    private const string Base64Table = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
+
+    public static string DecodeChineseFromBase64(string original)
+    {
+        BigInteger bits = 0;
+        int index = 0;
+        foreach (var c in original)
+        {
+            BigInteger value = Base64Table.IndexOf(c);
+            if (value == -1)
+            {
+                throw new Exception("Invalid base64 string");
+            }
+            bits = bits | (value << index);
+            index += Base64CodeSize;
+        }
+        BigInteger checksum = 0;
+        var result = new List<byte>();
+        for (var bitIndex = 0; bitIndex < EncodedChineseContentLength; bitIndex += ChineseCodeSize)
+        {
+            int value = (int)((bits >> bitIndex) & ChineseCodeMask);
+            checksum += value;
+            if (value == 0)
+            {
+                break;
+            }
+            if (value < AsciiSectionSize)
+            {
+                if (value < 0x20 || value == 0x7F)
+                {
+                    throw new Exception("Invalid ASCII");
+                }
+                result.Add((byte)value);
+            }
+            else
+            {
+                value -= AsciiSectionSize;
+                var index1 = value / Gb2312RowWidth + 1;
+                var index2 = value % Gb2312RowWidth + 1;
+                if (index1 >= Gb2312FirstUnassignedSectionBegin)
+                {
+                    index1 += Gb2312FirstUnassignedSectionSize;
+                }
+                if (index1 >= Gb2312SecondUnassignedSectionBegin)
+                {
+                    throw new Exception("Invalid first byte");
+                }
+                if (index2 > Gb2312RowWidth)
+                {
+                    throw new Exception("Invalid second byte");
+                }
+                index1 += Gb2312EucOffset;
+                index2 += Gb2312EucOffset;
+                result.Add((byte)index1);
+                result.Add((byte)index2);
+            }
+        }
+        if ((bits >> EncodedChineseContentLength) != checksum % 8)
+        {
+            throw new Exception("Invalid checksum");
+        }
+        Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
+        return Encoding.GetEncoding(936).GetString(result.ToArray());
+    }
+
+    public static string EncodeChineseToBase64(string original)
+    {
+        BigInteger bits = 0;
+        int index = 0;
+        Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
+        var bytes = Encoding.GetEncoding(936).GetBytes(original);
+        BigInteger checksum = 0;
+        for (var i = 0; i < bytes.Length;)
+        {
+            BigInteger c = bytes[i];
+            if (c < AsciiSectionSize)
+            {
+                if (c < 0x20 || c == 0x7F)
+                {
+                    throw new Exception("Invalid ASCII");
+                }
+                bits = bits | (c << index);
+                index += ChineseCodeSize;
+                checksum += c;
+                i++;
+            }
+            else
+            {
+                if (c <= Gb2312EucOffset || c > (Gb2312EucOffset + Gb2312LastRow))
+                {
+                    throw new Exception("Invalid first byte");
+                }
+                BigInteger c2 = bytes[i + 1];
+                if (c2 <= Gb2312EucOffset || c2 > (Gb2312EucOffset + Gb2312RowWidth))
+                {
+                    throw new Exception("Invalid second byte");
+                }
+                var index1 = c - Gb2312EucOffset;
+                if (index1 >= Gb2312FirstUnassignedSectionBegin)
+                {
+                    var offset = index1 - Gb2312FirstUnassignedSectionBegin;
+                    if (offset < Gb2312FirstUnassignedSectionSize)
+                    {
+                        throw new Exception("AA-AF user defined zone not supported");
+                    }
+                    index1 -= Gb2312FirstUnassignedSectionSize;
+                }
+                var index2 = c2 - Gb2312EucOffset;
+                if (index2 > Gb2312RowWidth)
+                {
+                    throw new Exception("Invalid second byte");
+                }
+                var value = (index1 - 1) * Gb2312RowWidth + (index2 - 1);
+                value = AsciiSectionSize + value;
+                bits = bits | (value << index);
+                index += ChineseCodeSize;
+                checksum += value;
+                i += 2;
+            }
+        }
+        bits = bits | ((checksum % 8) << EncodedChineseContentLength);
+        var result = "";
+        var bitsIndex = 0;
+        while (bitsIndex < EncodedChineseTotalLength)
+        {
+            int v = (int)((bits >> bitsIndex) & Base64CodeMask);
+            result += Base64Table[v];
+            bitsIndex += Base64CodeSize;
+        }
+        return result;
+    }
+
+    public static string GetPrettyName(string name)
+    {
+        if (name.Length != 20)
+        {
+            return name;
+        }
+        foreach (var c in name)
+        {
+            if (!Base64Table.Contains(c))
+            {
+                return name;
+            }
+        }
+        try
+        {
+            return DecodeChineseFromBase64(name);
+        }
+        catch
+        {
+            return name;
+        }
+    }
+}
\ No newline at end of file
diff --git a/MainWindow.xaml.cs b/MainWindow.xaml.cs
index f2af168..8b36df1 100644
--- a/MainWindow.xaml.cs
+++ b/MainWindow.xaml.cs
@@ -103,7 +103,6 @@ namespace AnotherReplayReader
         private readonly TaskQueue _taskQueue;
         private readonly MainWindowProperties _properties = new();
         private readonly Cache _cache = new();
-        private readonly PlayerIdentity _playerIdentity;
         private readonly BigMinimapCache _minimapCache;
         private readonly MinimapReader _minimapReader;
         private readonly CancelManager _cancelLoadReplays = new();
@@ -116,10 +115,9 @@ namespace AnotherReplayReader
         public MainWindow()
         {
             _taskQueue = new(Dispatcher);
-            _playerIdentity = new PlayerIdentity(_cache);
             _minimapCache = new BigMinimapCache(_properties.RA3Directory);
             _minimapReader = new MinimapReader(_minimapCache, _properties.CustomMapsDirectory, _properties.ModsDirectory);
-            _replayList = new(_playerIdentity);
+            _replayList = new();
 
             DataContext = _properties;
             InitializeComponent();
@@ -137,20 +135,9 @@ namespace AnotherReplayReader
             ReplayAutoSaver.SpawnAutoSaveReplaysTask(_properties.RA3ReplayFolderPath);
             var token = _cancelLoadReplays.ResetAndGetToken(CancellationToken.None);
             _ = _taskQueue.Enqueue(() => LoadReplays(null, token), token);
-            
-            var wantUsePlugin = true;
-            try
-            {
-                wantUsePlugin = await Plugin.LoadPlayerIdentityPlugin(_playerIdentity);
-            }
-            catch (Exception e)
-            {
-                Debug.Instance.DebugMessage += $"Failed to load plugin: {e}";
-                MessageBox.Show(this, $"插件加载失败：{e.Message}");
-            }
 
             const string permissionKey = "questionAsked";
-            if (!wantUsePlugin && _cache.GetOrDefault(permissionKey, false) is not true)
+            if (_cache.GetOrDefault(permissionKey, false) is not true)
             {
                 _cache.Set(permissionKey, true);
                 var sb = new StringWriter();
@@ -194,7 +181,7 @@ namespace AnotherReplayReader
             }
 
             cancelToken.ThrowIfCancellationRequested();
-            _replayList = new(_playerIdentity);
+            _replayList = new();
 
             var path = _properties.ReplayFolderPath;
             if (!Directory.Exists(path))
@@ -228,7 +215,7 @@ namespace AnotherReplayReader
                         clock.Restart();
                     }
                 }
-                return new ReplayPinyinList(list.ToImmutableArray(), _playerIdentity);
+                return new ReplayPinyinList(list.ToImmutableArray());
             }, cancelToken);
             cancelToken.ThrowIfCancellationRequested();
             _replayList = result;
@@ -323,7 +310,7 @@ namespace AnotherReplayReader
                 minimapTask.Forget();
                 minimapTask = _minimapReader.TryReadTargaAsync(replay);
             }
-            var newDetails = replay.GetDetails(_playerIdentity);
+            var newDetails = replay.GetDetails();
             if (_properties.ReplayDetails != newDetails)
             {
                 if (_replayList.Replays.FindIndex(r => r.PathEquals(replay)) is int index)
@@ -365,7 +352,6 @@ namespace AnotherReplayReader
                     _replayDetailsBox.Text += $"{jsonMagic}\r\n";
                     break;
                 case assemblyMagic:
-                    Plugin.Sign();
                     break;
                 case jsonMagic:
                     UpdateChecker.Sign();
@@ -381,7 +367,7 @@ namespace AnotherReplayReader
             }
 
             var token = _cancelDisplayReplays.ResetAndGetToken(_cancelFilterReplays.Token);
-            _properties.ReplayDetails = replay.GetDetails(_playerIdentity);
+            _properties.ReplayDetails = replay.GetDetails();
             await _taskQueue.Enqueue(() => DisplayReplayDetail(replay, _properties.ReplayDetails, token), token);
         }
 
@@ -420,7 +406,7 @@ namespace AnotherReplayReader
 
         private void OnDetailsButtonClick(object sender, RoutedEventArgs e)
         {
-            var detailsWindow = new ApmWindow(_properties.CurrentReplay!, _playerIdentity)
+            var detailsWindow = new ApmWindow(_properties.CurrentReplay!)
             {
                 Owner = this
             };
diff --git a/PlayerIdentity.cs b/PlayerIdentity.cs
deleted file mode 100644
index 7dd5b7e..0000000
--- a/PlayerIdentity.cs
+++ /dev/null
@@ -1,184 +0,0 @@
-using AnotherReplayReader.PluginSystem;
-using AnotherReplayReader.Utils;
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Security.Cryptography;
-using System.Text.Json;
-using System.Threading.Tasks;
-using static System.Text.Json.JsonSerializer;
-
-namespace AnotherReplayReader
-{
-    internal class PlayerIdentity
-    {
-        private class NetworkSerializer : IGenericCallable
-        {
-            public TResult Invoke<TArg, TResult>(TArg arg) => throw new NotImplementedException();
-
-            public Task<TResult?> InvokeAsync<TArg, TResult>(TArg arg)
-            {
-                var url = arg as string ?? throw new NotImplementedException();
-                return Network.HttpGetJson<TResult>(url);
-            }
-        }
-
-        private const string StoredKey = "pt";
-        private const string IvKey = "jw";
-        private static readonly JsonSerializerOptions _jsonOptions = new()
-        {
-            PropertyNameCaseInsensitive = true
-        };
-        private readonly object _lock = new();
-        private readonly Cache _cache;
-        private readonly TaskCompletionSource<IPlayerIdentityService> _serviceSource = new();
-        private IReadOnlyDictionary<uint, string>? _list;
-
-        public bool IsUsable => Lock.Run(_lock, () => _list is not null);
-
-        public PlayerIdentity(Cache cache)
-        {
-            _cache = cache;
-            Task.Run(FetchLocal);
-            Fetch();
-        }
-
-        public void LoadPlugin(IPlugin plugin)
-        {
-            var service = plugin.CreatePlayerIdentityService(Network.UrlEncode, new NetworkSerializer());
-            _serviceSource.TrySetResult(service);
-        }
-
-        public Task Fetch()
-        {
-            return Task.Run(async () =>
-            {
-                try
-                {
-                    if (await Auth.Id is null)
-                    {
-                        return;
-                    }
-
-                    var service = await _serviceSource.Task.ConfigureAwait(false);
-                    var list = await service.Fetch<IpAndPlayer>().ConfigureAwait(false);
-                    var converted = list?.ToDictionary(x => x.Ip, x => x.Id);
-                    lock (_lock)
-                    {
-                        _list = converted;
-                    }
-
-                    if (list is null || await Auth.IdAsKey() is not { } encryptKey)
-                    {
-                        _cache.Set<string?>(StoredKey, null);
-                        return;
-                    }
-
-                    using var memory = new MemoryStream();
-                    using var aes = Aes.Create();
-                    using (var encryptor = aes.CreateEncryptor(encryptKey, aes.IV))
-                    using (var decryptorStream = new CryptoStream(memory, encryptor, CryptoStreamMode.Write))
-                    {
-                        await SerializeAsync(decryptorStream, list, _jsonOptions).ConfigureAwait(false);
-                    }
-                    memory.Flush();
-                    _cache.SetValues((StoredKey, Convert.ToBase64String(memory.ToArray())), (IvKey, Convert.ToBase64String(aes.IV)));
-                }
-                catch { }
-            });
-        }
-
-        public async Task<bool> UpdateIpTable(uint ip, string idText)
-        {
-            var service = await _serviceSource.Task.ConfigureAwait(false);
-            return await service.UpdateIpTable(ip, idText).ConfigureAwait(false);
-        }
-
-        public List<IpAndPlayer> AsSortedList()
-        {
-            using var locker = new Lock(_lock);
-
-            return _list?
-                .Select((kv) => new IpAndPlayer { Ip = kv.Key, Id = kv.Value })
-                .OrderBy(x => x.Ip)
-                .ToList() ?? new(0);
-        }
-
-        public string? GetRealName(uint ip)
-        {
-            using var locker = new Lock(_lock);
-            if (_list is null)
-            {
-                return null;
-            }
-
-            if (ip is 0 || !_list.TryGetValue(ip, out var name))
-            {
-                return string.Empty;
-            }
-
-            return name;
-        }
-
-        public string FormatRealName(uint ip)
-        {
-            var name = GetRealName(ip);
-            if (name is null)
-            {
-                return string.Empty;
-            }
-            if (string.IsNullOrEmpty(name))
-            {
-                name = IpAndPlayer.SimpleIPToString(ip);
-            }
-            return $"（{name}）";
-        }
-
-        public string? QueryRealNameAndIP(uint ip)
-        {
-            var name = GetRealName(ip);
-            if (name is null)
-            {
-                return null;
-            }
-            var ipText = IpAndPlayer.SimpleIPToString(ip);
-            if (string.IsNullOrEmpty(name))
-            {
-                return ipText;
-            }
-            return $"{name}，{ipText}";
-        }
-
-        private async Task FetchLocal()
-        {
-            try
-            {
-                await _cache.Initialization;
-                var stored = _cache.GetOrDefault(StoredKey, string.Empty);
-                var iv = Convert.FromBase64String(_cache.GetOrDefault(IvKey, string.Empty));
-                if (string.IsNullOrWhiteSpace(stored) || await Auth.IdAsKey() is not { } key)
-                {
-                    return;
-                }
-
-                using var aes = Aes.Create();
-                using var decryptor = aes.CreateDecryptor(key, iv);
-                using var memory = new MemoryStream(Convert.FromBase64String(stored));
-                using var decryptorStream = new CryptoStream(memory, decryptor, CryptoStreamMode.Read);
-                var cachedTable = await DeserializeAsync<List<IpAndPlayer>>(decryptorStream, _jsonOptions).ConfigureAwait(false);
-                if (cachedTable is null)
-                {
-                    return;
-                }
-                var converted = cachedTable.ToDictionary(x => x.Ip, x => x.Id);
-                converted[0] = "【没有网络连接，正在使用上次保存的数据】";
-                lock (_lock)
-                {
-                    _list ??= converted;
-                }
-            }
-            catch { }
-        }
-    }
-}
diff --git a/Plugin.cs b/Plugin.cs
deleted file mode 100644
index 6b5c9db..0000000
--- a/Plugin.cs
+++ /dev/null
@@ -1,78 +0,0 @@
-using AnotherReplayReader.PluginSystem;
-using AnotherReplayReader.Utils;
-using Microsoft.Win32;
-using System;
-using System.IO;
-using System.Linq;
-using System.Reflection;
-using System.Security.Cryptography;
-using System.Text.Json;
-using System.Threading.Tasks;
-
-namespace AnotherReplayReader
-{
-
-    internal static class Plugin
-    {
-        public static Task<bool> LoadPlayerIdentityPlugin(PlayerIdentity playerIdentity)
-        {
-            return Task.Run(async () =>
-            {
-                var name = $"{nameof(AnotherReplayReader)}.{nameof(PlayerIdentity)}";
-                var fileName = Path.Combine(App.LibsFolder, $"{name}.dll");
-                if (File.Exists(fileName))
-                {
-                    var assembly = await Load(fileName);
-                    var pluginType = assembly.GetType($"{name}.Plugin", true);
-                    var plugin = (IPlugin)Activator.CreateInstance(pluginType);
-                    Auth.LoadPlugin(plugin);
-                    playerIdentity.LoadPlugin(plugin);
-                    return true;
-                }
-                return false;
-            });
-        }
-
-        public static async Task<Assembly> Load(string path)
-        {
-            using var file = File.OpenRead(path);
-            using var metaFile = File.OpenRead($"{path}.meta");
-            var metaTask = JsonSerializer.DeserializeAsync<VerifierPayload>(metaFile, Network.CommonJsonOptions);
-            using var memory = new MemoryStream();
-            await file.CopyToAsync(memory);
-            var array = memory.ToArray();
-            using var sha256 = SHA256.Create();
-            var hash = sha256.ComputeHash(array);
-            var meta = await metaTask ?? throw new InvalidDataException("Failed to load meta file");
-            if (!Enumerable.SequenceEqual(hash, meta.ByteData.Value))
-            {
-                throw new InvalidDataException($"Hash does not match, might be corrupt {Convert.ToBase64String(hash)}  vs  {meta.Data}");
-            }
-            if (!Verifier.Verify(meta))
-            {
-                throw new InvalidDataException("Invalid metadata, might be corrupt");
-            }
-            return Assembly.Load(array);
-        }
-
-        public static void Sign()
-        {
-            var openFileDialog = new OpenFileDialog
-            {
-                Filter = "dll (*.dll)|*.dll|所有文件 (*.*)|*.*",
-                InitialDirectory = AppContext.BaseDirectory,
-            };
-
-            var result = openFileDialog.ShowDialog();
-            if (result is true)
-            {
-                using var file = openFileDialog.OpenFile();
-                using var memory = new MemoryStream();
-                file.CopyTo(memory);
-                using var sha256 = SHA256.Create();
-                var hash = sha256.ComputeHash(memory.ToArray());
-                Verifier.Sign(hash);
-            }
-        }
-    }
-}
diff --git a/ReplayFile/Player.cs b/ReplayFile/Player.cs
index 0832305..ab16019 100644
--- a/ReplayFile/Player.cs
+++ b/ReplayFile/Player.cs
@@ -37,6 +37,11 @@ namespace AnotherReplayReader.ReplayFile
                 FactionId = int.Parse(playerEntry[5]);
                 Team = int.Parse(playerEntry[7]);
             }
+
+            if (PlayerName.Length == 20)
+            {
+                PlayerName = Ra3.BattleNet.Database.Utils.ChineseEncoding.DecodeChineseFromBase64(PlayerName);
+            }
         }
     }
 }
diff --git a/ReplayFile/Replay.cs b/ReplayFile/Replay.cs
index 7c92695..f22193c 100644
--- a/ReplayFile/Replay.cs
+++ b/ReplayFile/Replay.cs
@@ -239,7 +239,7 @@ namespace AnotherReplayReader.ReplayFile
         public bool PathEquals(Replay replay) => PathEquals(replay.Path);
         public bool PathEquals(string path) => Path.Equals(path, StringComparison.OrdinalIgnoreCase);
 
-        public string GetDetails(PlayerIdentity playerIdentity)
+        public string GetDetails()
         {
             static string GetSizeString(double size)
             {
@@ -273,8 +273,7 @@ namespace AnotherReplayReader.ReplayFile
                     break;
                 }
                 var factionName = ModData.GetFaction(Mod, player.FactionId).Name;
-                var realName = Type == ReplayType.Lan ? playerIdentity.FormatRealName(player.PlayerIp) : string.Empty;
-                writer.WriteLine($"{player.PlayerName + realName}，{factionName}");
+                writer.WriteLine($"{player.PlayerName}，{factionName}");
             }
 
             return writer.ToString();
diff --git a/Utils/ReplayPinyinList.cs b/Utils/ReplayPinyinList.cs
index d3a8e4d..d9347c4 100644
--- a/Utils/ReplayPinyinList.cs
+++ b/Utils/ReplayPinyinList.cs
@@ -6,27 +6,23 @@ namespace AnotherReplayReader.Utils
 {
     internal class ReplayPinyinList
     {
-        private readonly PlayerIdentity _playerIdentity;
         public ImmutableArray<Replay> Replays { get; } = ImmutableArray<Replay>.Empty;
         public ImmutableArray<ReplayPinyinData> Pinyins { get; } = ImmutableArray<ReplayPinyinData>.Empty;
 
-        public ReplayPinyinList(PlayerIdentity playerIdentity) :
-            this(ImmutableArray<Replay>.Empty, playerIdentity)
+        public ReplayPinyinList() :
+            this(ImmutableArray<Replay>.Empty)
         {
         }
 
-        public ReplayPinyinList(ImmutableArray<Replay> replay, PlayerIdentity playerIdentity) :
+        public ReplayPinyinList(ImmutableArray<Replay> replay) :
             this(replay,
-                 replay.Select(replay => new ReplayPinyinData(replay, playerIdentity)).ToImmutableArray(),
-                 playerIdentity)
+                 replay.Select(replay => new ReplayPinyinData(replay)).ToImmutableArray())
         {
         }
 
         private ReplayPinyinList(ImmutableArray<Replay> replay,
-                                 ImmutableArray<ReplayPinyinData> pinyins,
-                                 PlayerIdentity playerIdentity)
+                                 ImmutableArray<ReplayPinyinData> pinyins)
         {
-            _playerIdentity = playerIdentity;
             Replays = replay;
             Pinyins = pinyins;
         }
@@ -34,8 +30,7 @@ namespace AnotherReplayReader.Utils
         public ReplayPinyinList SetItem(int index, Replay replay)
         {
             return new(Replays.SetItem(index, replay),
-                       Pinyins.SetItem(index, new(replay, _playerIdentity)),
-                       _playerIdentity);
+                       Pinyins.SetItem(index, new(replay)));
         }
     }
 
@@ -45,10 +40,10 @@ namespace AnotherReplayReader.Utils
         public string? PinyinDetails { get; }
         public string? PinyinMod { get; }
 
-        public ReplayPinyinData(Replay replay, PlayerIdentity playerIdentity)
+        public ReplayPinyinData(Replay replay)
         {
             Replay = replay;
-            PinyinDetails = replay.GetDetails(playerIdentity).ToPinyin();
+            PinyinDetails = replay.GetDetails().ToPinyin();
             PinyinMod = replay.Mod.ModName.ToPinyin();
         }
 
diff --git a/Window1.xaml.cs b/Window1.xaml.cs
index 8a3fd33..4041d71 100644
--- a/Window1.xaml.cs
+++ b/Window1.xaml.cs
@@ -13,12 +13,10 @@ namespace AnotherReplayReader
     /// </summary>
     internal partial class Window1 : Window
     {
-        private readonly PlayerIdentity _identity;
 
-        public Window1(PlayerIdentity identity)
+        public Window1()
         {
             InitializeComponent();
-            _identity = identity;
             Refresh(true);
         }
 
@@ -34,7 +32,6 @@ namespace AnotherReplayReader
                     await Display();
                     _dataGrid.ItemsSource = loading.Concat(_dataGrid.ItemsSource.Cast<IpAndPlayer>());
                 }
-                await _identity.Fetch();
                 await Display();
             }
             catch (Exception e)
@@ -49,26 +46,6 @@ namespace AnotherReplayReader
 
         private async Task Display(string filter = "", string nameFilter = "")
         {
-            var result = await Task.Run(() =>
-            {
-                var pinyin = nameFilter.ToPinyin();
-                var query = _identity
-                    .AsSortedList()
-                    .Where(x =>
-                    {
-                        if (!x.IpString.Contains(filter))
-                        {
-                            return false;
-                        }
-                        if (x.PinyinId?.ContainsIgnoreCase(pinyin) is true)
-                        {
-                            return true;
-                        }
-                        return x.Id.ContainsIgnoreCase(nameFilter);
-                    });
-                return new ObservableCollection<IpAndPlayer>(query);
-            });
-            _dataGrid.ItemsSource = result;
         }
 
         private async void OnClick(object sender, RoutedEventArgs e)
@@ -114,7 +91,7 @@ namespace AnotherReplayReader
         {
             var bytes = ip.GetAddressBytes();
             var ipNum = (uint)bytes[0] * 256 * 256 * 256 + bytes[1] * 256 * 256 + bytes[2] * 256 + bytes[3];
-            return await _identity.UpdateIpTable(checked((uint)ipNum), idText).ConfigureAwait(false);
+            return false;
         }
 
         private async void OnIpFieldChanged(object sender, System.Windows.Controls.TextChangedEventArgs e)