diff --git a/FunGame.Core/Api/Utility/EnumHelper.cs b/FunGame.Core/Api/Utility/EnumHelper.cs
index 8ad1ccb..8d5742c 100644
--- a/FunGame.Core/Api/Utility/EnumHelper.cs
+++ b/FunGame.Core/Api/Utility/EnumHelper.cs
@@ -4,7 +4,7 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using Milimoe.FunGame.Core.Entity.Enum;
-using Milimoe.FunGame.Core.Others;
+using Milimoe.FunGame.Core.Library.Constant;
 
 namespace Milimoe.FunGame.Core.Api.Utility
 {
diff --git a/FunGame.Core/Api/Utility/FactoryHelper.cs b/FunGame.Core/Api/Utility/FactoryHelper.cs
index 6cdf3ce..968eadb 100644
--- a/FunGame.Core/Api/Utility/FactoryHelper.cs
+++ b/FunGame.Core/Api/Utility/FactoryHelper.cs
@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using Milimoe.FunGame.Core.Library.Constant;
 
 namespace Milimoe.FunGame.Core.Api.Utility
 {
@@ -41,7 +42,7 @@ namespace Milimoe.FunGame.Core.Api.Utility
         /// <returns></returns>
         public static object New<T>(params object[]? objs)
         {
-            object instance = Core.Others.Constant.EntityInstance;
+            object instance = General.EntityInstance;
             if (!IsEntity<T>()) return instance;
             if (objs is null || objs.Length == 0) return instance;
             if (typeof(T) == typeof(Entity.General.User))
@@ -66,7 +67,7 @@ namespace Milimoe.FunGame.Core.Api.Utility
         /// <returns></returns>
         public static object NewSingle<T>(params object[]? objs)
         {
-            object instance = Core.Others.Constant.EntityInstance;
+            object instance = General.EntityInstance;
             if (!IsEntity<T>()) return instance;
             if (objs is null || objs.Length == 0) return instance;
             if (typeof(T) == typeof(Entity.General.User))
diff --git a/FunGame.Core/FunGame.Core.csproj b/FunGame.Core/FunGame.Core.csproj
index 34de1c0..a265800 100644
--- a/FunGame.Core/FunGame.Core.csproj
+++ b/FunGame.Core/FunGame.Core.csproj
@@ -22,4 +22,8 @@
     <DebugType>embedded</DebugType>
   </PropertyGroup>
 
+  <ItemGroup>
+    <Folder Include="Library\Common\" />
+  </ItemGroup>
+
 </Project>
diff --git a/FunGame.Core/Interface/Example.cs b/FunGame.Core/Interface/Example.cs
index 7d167e7..f2c648d 100644
--- a/FunGame.Core/Interface/Example.cs
+++ b/FunGame.Core/Interface/Example.cs
@@ -1,7 +1,8 @@
 namespace Milimoe.FunGame.Core.Interface
 {
     /**
-     * 接口需要在FunGame.Core项目中Implement文件夹创建新的类实现
+     * 接口需要在FunGame.Core项目中创建新的类实现
+     * namespace必须是Milimoe.FunGame.Core.Implement，文件夹位置随意
      * 参考：
      * using Milimoe.FunGame.Core.Interface;
 
diff --git a/FunGame.Core/Library/Constant/General.cs b/FunGame.Core/Library/Constant/General.cs
new file mode 100644
index 0000000..f639571
--- /dev/null
+++ b/FunGame.Core/Library/Constant/General.cs
@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Milimoe.FunGame.Core.Library.Constant
+{
+    public class General
+    {
+        public static Entity.General.Empty EntityInstance { get; } = new();
+    }
+}
diff --git a/FunGame.Core/Others/InterfaceSet.cs b/FunGame.Core/Library/Constant/InterfaceSet.cs
similarity index 87%
rename from FunGame.Core/Others/InterfaceSet.cs
rename to FunGame.Core/Library/Constant/InterfaceSet.cs
index 3306e4e..8dd3106 100644
--- a/FunGame.Core/Others/InterfaceSet.cs
+++ b/FunGame.Core/Library/Constant/InterfaceSet.cs
@@ -4,7 +4,7 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace Milimoe.FunGame.Core.Others
+namespace Milimoe.FunGame.Core.Library.Constant
 {
     public enum InterfaceType
     {
diff --git a/FunGame.Core/Entity/Exception/SystemError.cs b/FunGame.Core/Library/Exception/SystemError.cs
similarity index 92%
rename from FunGame.Core/Entity/Exception/SystemError.cs
rename to FunGame.Core/Library/Exception/SystemError.cs
index ccae7b4..c7c65cc 100644
--- a/FunGame.Core/Entity/Exception/SystemError.cs
+++ b/FunGame.Core/Library/Exception/SystemError.cs
@@ -5,7 +5,7 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace Milimoe.FunGame.Core.Entity.Exception
+namespace Milimoe.FunGame.Core.Library.Exception
 {
     public class SystemError : System.Exception
     {
diff --git a/FunGame.Core/Others/Constant.cs b/FunGame.Core/Others/Others.cs
similarity index 60%
rename from FunGame.Core/Others/Constant.cs
rename to FunGame.Core/Others/Others.cs
index 003e34e..5cba823 100644
--- a/FunGame.Core/Others/Constant.cs
+++ b/FunGame.Core/Others/Others.cs
@@ -6,8 +6,7 @@ using System.Threading.Tasks;
 
 namespace Milimoe.FunGame.Core.Others
 {
-    public class Constant
+    internal class Others
     {
-        public static Entity.General.Empty EntityInstance = new Entity.General.Empty();
     }
 }
diff --git a/FunGame.Core/Service/SocketManager.cs b/FunGame.Core/Service/SocketManager.cs
index 7fad323..5f0cc11 100644
--- a/FunGame.Core/Service/SocketManager.cs
+++ b/FunGame.Core/Service/SocketManager.cs
@@ -12,6 +12,15 @@ namespace Milimoe.FunGame.Core.Service
 {
     internal class SocketManager
     {
+        internal static SocketManager? Instance { get; private set; }
+
+        internal Socket? Socket { get; } = null;
+
+        private SocketManager(Socket socket)
+        {
+            Socket = socket;
+        }
+
         internal static Socket? Connect(string IP, int Port = 22222)
         {
             Socket? socket = null;
@@ -29,6 +38,7 @@ namespace Milimoe.FunGame.Core.Service
                             socket.Connect(ServerEndPoint);
                             if (socket.Connected)
                             {
+                                Instance = new SocketManager(socket);
                                 return socket;
                             }
                         }
diff --git a/FunGame.Desktop/UI/Main/Main.cs b/FunGame.Desktop/UI/Main/Main.cs
index 90a9cd3..1211875 100644
--- a/FunGame.Desktop/UI/Main/Main.cs
+++ b/FunGame.Desktop/UI/Main/Main.cs
@@ -7,10 +7,10 @@ using System.Text;
 using Milimoe.FunGame.Core.Api.Utility;
 using Milimoe.FunGame.Core.Entity.General;
 using Milimoe.FunGame.Core.Entity.Enum;
-using Milimoe.FunGame.Core.Others;
 using Milimoe.FunGame.Desktop.Entity.Component;
 using Milimoe.FunGame.Desktop.Others;
 using Milimoe.FunGame.Desktop.Utils;
+using Milimoe.FunGame.Core.Library.Constant;
 
 namespace Milimoe.FunGame.Desktop.UI
 {