diff --git a/FunGame.Core/Api/Factory/UserFactory.cs b/FunGame.Core/Api/Factory/UserFactory.cs
index bdaabc9..ce3aa03 100644
--- a/FunGame.Core/Api/Factory/UserFactory.cs
+++ b/FunGame.Core/Api/Factory/UserFactory.cs
@@ -1,20 +1,18 @@
+using System.Data;
+using Milimoe.FunGame.Core.Entity;
+
 namespace Milimoe.FunGame.Core.Api.Factory
 {
     internal class UserFactory
     {
-        internal static Milimoe.FunGame.Core.Entity.User GetInstance()
+        internal static User GetInstance()
         {
-            return new Milimoe.FunGame.Core.Entity.User();
+            return new User();
         }
 
-        internal static Milimoe.FunGame.Core.Entity.User GetInstance(string username)
+        internal static User GetInstance(DataSet? ds)
         {
-            return new Milimoe.FunGame.Core.Entity.User(username);
-        }
-
-        internal static Milimoe.FunGame.Core.Entity.User GetInstance(string username, string password)
-        {
-            return new Milimoe.FunGame.Core.Entity.User(username, password);
+            return new User(ds);
         }
     }
 }
diff --git a/FunGame.Core/Api/Utility/Factory.cs b/FunGame.Core/Api/Utility/Factory.cs
index b037cc8..58076ea 100644
--- a/FunGame.Core/Api/Utility/Factory.cs
+++ b/FunGame.Core/Api/Utility/Factory.cs
@@ -1,4 +1,5 @@
-using Milimoe.FunGame.Core.Entity;
+using System.Data;
+using Milimoe.FunGame.Core.Entity;
 using Milimoe.FunGame.Core.Library.Constant;
 
 namespace Milimoe.FunGame.Core.Api.Utility
@@ -7,43 +8,19 @@ namespace Milimoe.FunGame.Core.Api.Utility
    {
         /// <summary>
         /// 获取一个可能为NULL的实例
+        /// <para>Item默认返回PassiveItem</para>
+        /// <para>Skill默认返回PassiveSkill</para>
+        /// <para>若无法找到T，返回唯一的空对象</para>
         /// </summary>
         /// <typeparam name="T">Entity类</typeparam>
-        /// <param name="objs">构造函数的参数</param>
+        /// <param name="DataSet">使用DataSet构造对象（真香）</param>
         /// <returns></returns>
-        public static T? GetInstance<T>(params object[]? objs)
-        {
-            if (!IsEntity<T>()) return default;
-            object? instance = null;
-            if (objs is null || objs.Length == 0) return (T?)instance;
-            if (typeof(T) == typeof(Entity.User))
-            {
-                instance = Api.Factory.UserFactory.GetInstance("Mili");
-            }
-            else if (typeof(T) == typeof(Skill))
-            {
-
-            }
-            return (T?)instance;
-        }
-
-        /// <summary>
-        /// 获取一个不可能为NULL的实例
-        /// Item默认返回PassiveItem
-        /// Skill默认返回PassiveSkill
-        /// 若无法找到T，返回唯一的空对象
-        /// </summary>
-        /// <typeparam name="T">Entity类</typeparam>
-        /// <param name="objs">构造函数的参数</param>
-        /// <returns></returns>
-        public static T New<T>(params object[]? objs)
+        public static T GetInstance<T>(DataSet? DataSet)
         {
             object instance = General.EntityInstance;
-            if (!IsEntity<T>()) return (T)instance;
-            if (objs is null || objs.Length == 0) return (T)instance;
-            if (typeof(T) == typeof(Entity.User))
+            if (typeof(T) == typeof(User))
             {
-                instance = GetUser(objs);
+                instance = Api.Factory.UserFactory.GetInstance(DataSet);
             }
             else if (typeof(T) == typeof(Skill))
             {
@@ -51,69 +28,5 @@ namespace Milimoe.FunGame.Core.Api.Utility
             }
             return (T)instance;
         }
-
-        /// <summary>
-        /// 获取一个不可能为NULL的单例
-        /// Item默认返回PassiveItem
-        /// Skill默认返回PassiveSkill
-        /// 若无法找到T，返回唯一的空对象
-        /// </summary>
-        /// <typeparam name="T">Entity类</typeparam>
-        /// <param name="objs">构造函数的参数</param>
-        /// <returns></returns>
-        public static object NewSingle<T>(params object[]? objs)
-        {
-            object instance = General.EntityInstance;
-            if (!IsEntity<T>()) return instance;
-            if (objs is null || objs.Length == 0) return instance;
-            if (typeof(T) == typeof(Entity.User))
-            {
-                instance = Api.Factory.UserFactory.GetInstance("Mili");
-            }
-            else if (typeof(T) == typeof(Skill))
-            {
-
-            }
-            Singleton.Add(instance);
-            return instance;
-        }
-
-        private static bool IsEntity<T>()
-        {
-            if (typeof(T) == typeof(Entity.ActiveItem) || typeof(T) == typeof(ActiveSkill)
-                || typeof(T) == typeof(Entity.Character) || typeof(T) == typeof(Entity.CharacterStatistics)
-                || typeof(T) == typeof(Entity.GameStatistics) || typeof(T) == typeof(Inventory)
-                || typeof(T) == typeof(Entity.Item) || typeof(T) == typeof(Entity.PassiveItem)
-                || typeof(T) == typeof(PassiveSkill) || typeof(T) == typeof(Entity.Room)
-                || typeof(T) == typeof(Skill) || typeof(T) == typeof(Entity.User)
-                || typeof(T) == typeof(Entity.UserStatistics))
-                return true;
-            return false;
-        }
-
-        private static User GetUser(params object[] objs)
-        {
-            string username = "", password = "";
-            object objTemp;
-            if (objs.Length > 0)
-            {
-                objTemp = objs[0];
-                if (objTemp.GetType() != typeof(string))
-                {
-                    username = NetworkUtility.ConvertJsonObject<string>(objTemp) ?? "";
-                }
-                else username = (string)objs[0];
-            }
-            if (objs.Length > 1)
-            {
-                objTemp = objs[1];
-                if (objTemp.GetType() != typeof(string))
-                {
-                    password = NetworkUtility.ConvertJsonObject<string>(objTemp) ?? "";
-                }
-                else password = (string)objs[1];
-            }
-            return Api.Factory.UserFactory.GetInstance(username, password);
-        }
     }
 }
diff --git a/FunGame.Core/Entity/User/User.cs b/FunGame.Core/Entity/User/User.cs
index 2e25667..df892d9 100644
--- a/FunGame.Core/Entity/User/User.cs
+++ b/FunGame.Core/Entity/User/User.cs
@@ -1,4 +1,6 @@
+using System.Data;
 using Milimoe.FunGame.Core.Interface.Entity;
+using Milimoe.FunGame.Core.Library.SQLScript.Entity;
 
 namespace Milimoe.FunGame.Core.Entity
 {
@@ -14,11 +16,10 @@ namespace Milimoe.FunGame.Core.Entity
         public bool IsAdmin { get; set; } = false;
         public bool IsOperator { get; set; } = false;
         public bool IsEnable { get; set; } = false;
-        public int OnlineState { get; set; } = 0;
-        public string Roomid { get; set; } = "";
         public decimal Credits { get; set; } = 0;
         public decimal Materials { get; set; } = 0;
         public decimal GameTime { get; set; } = 0;
+        public string AutoKey { get; set; } = "";
         public UserStatistics? Statistics { get; set; } = null;
         public Inventory? Stock { get; set; } = null;
 
@@ -27,15 +28,26 @@ namespace Milimoe.FunGame.Core.Entity
 
         }
 
-        internal User(string username)
+        internal User(DataSet? ds)
         {
-            Username = username;
-        }
-
-        internal User(string username, string password)
-        {
-            Username = username;
-            Password = password;
+            if (ds != null && ds.Tables.Count > 0 && ds.Tables[0].Rows.Count > 0)
+            {
+                DataRow row = ds.Tables[0].Rows[0];
+                Id = (long)row[UserQuery.Column_UID];
+                Username = (string)row[UserQuery.Column_Username];
+                Password = (string)row[UserQuery.Column_Password];
+                RegTime = (DateTime)row[UserQuery.Column_RegTime];
+                LastTime = (DateTime)row[UserQuery.Column_LastTime];
+                Email = (string)row[UserQuery.Column_Email];
+                NickName = (string)row[UserQuery.Column_Nickname];
+                IsAdmin = (int)row[UserQuery.Column_IsAdmin] == 1;
+                IsOperator = (int)row[UserQuery.Column_IsOperator] == 1;
+                IsEnable = (int)row[UserQuery.Column_IsEnable] == 1;
+                Credits = (decimal)row[UserQuery.Column_Credits];
+                Materials = (decimal)row[UserQuery.Column_Materials];
+                GameTime = (decimal)row[UserQuery.Column_GameTime];
+                AutoKey = (string)row[UserQuery.Column_AutoKey];
+            }
         }
 
         public override bool Equals(IBaseEntity? other)
diff --git a/FunGame.Core/FunGame.Core.csproj b/FunGame.Core/FunGame.Core.csproj
index 54151b5..adad91f 100644
--- a/FunGame.Core/FunGame.Core.csproj
+++ b/FunGame.Core/FunGame.Core.csproj
@@ -23,4 +23,8 @@
     <DebugType>embedded</DebugType>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+  </ItemGroup>
+
 </Project>
diff --git a/FunGame.Core/Library/Common/Network/JsonObject.cs b/FunGame.Core/Library/Common/Network/JsonObject.cs
index a42992e..fa26ef2 100644
--- a/FunGame.Core/Library/Common/Network/JsonObject.cs
+++ b/FunGame.Core/Library/Common/Network/JsonObject.cs
@@ -1,6 +1,5 @@
-using Milimoe.FunGame.Core.Library.Constant;
-using System.Text.Json;
-using System.Text.Json.Serialization;
+using Newtonsoft.Json;
+using Milimoe.FunGame.Core.Library.Constant;
 
 namespace Milimoe.FunGame.Core.Library.Common.Network
 {
@@ -12,13 +11,12 @@ namespace Milimoe.FunGame.Core.Library.Common.Network
         public object[] Parameters { get; }
         public string JsonString { get; }
 
-        [JsonConstructor]
         public JsonObject(SocketMessageType MessageType, Guid Token, params object[] Parameters)
         {
             this.MessageType = MessageType;
             this.Token = Token;
             this.Parameters = Parameters;
-            this.JsonString = JsonSerializer.Serialize(this);
+            this.JsonString = JsonConvert.SerializeObject(this);
         }
 
         public static string GetString(SocketMessageType MessageType, Guid Token, params object[] Parameters)
@@ -28,7 +26,7 @@ namespace Milimoe.FunGame.Core.Library.Common.Network
 
         public static JsonObject? GetObject(string JsonString)
         {
-            return JsonSerializer.Deserialize<JsonObject>(JsonString);
+            return JsonConvert.DeserializeObject<JsonObject>(JsonString);
         }
     }
 }
diff --git a/FunGame.Core/Library/Common/Network/SocketObject.cs b/FunGame.Core/Library/Common/Network/SocketObject.cs
index 35d1b00..334e27a 100644
--- a/FunGame.Core/Library/Common/Network/SocketObject.cs
+++ b/FunGame.Core/Library/Common/Network/SocketObject.cs
@@ -1,5 +1,4 @@
-using Milimoe.FunGame.Core.Api.Utility;
-using Milimoe.FunGame.Core.Library.Constant;
+using Milimoe.FunGame.Core.Library.Constant;
 
 namespace Milimoe.FunGame.Core.Library.Common.Network
 {
@@ -29,7 +28,12 @@ namespace Milimoe.FunGame.Core.Library.Common.Network
         {
             if (index < Parameters.Length)
             {
-                return NetworkUtility.ConvertJsonObject<T>(Parameters[index]);
+                if (typeof(T) == typeof(Guid))
+                {
+                    object param = Guid.Parse((string)Parameters[index]);
+                    return (T)param;
+                }
+                return (T)Parameters[index];
             }
             throw new IndexOutOfArrayLengthException();
         }
diff --git a/FunGame.Core/Library/Exception/Exception.cs b/FunGame.Core/Library/Exception/Exception.cs
index d84449f..dace84e 100644
--- a/FunGame.Core/Library/Exception/Exception.cs
+++ b/FunGame.Core/Library/Exception/Exception.cs
@@ -149,4 +149,9 @@
     {
         public override string Message => "退出房间失败 (#10030)";
     }
+
+    public class GetInstanceException : Exception
+    {
+        public override string Message => "构造对象实例遇到错误 (#10031)";
+    }
 }
diff --git a/FunGame.Core/Library/SQLScript/Entity/User.cs b/FunGame.Core/Library/SQLScript/Entity/User.cs
index 94615a2..0189c90 100644
--- a/FunGame.Core/Library/SQLScript/Entity/User.cs
+++ b/FunGame.Core/Library/SQLScript/Entity/User.cs
@@ -14,7 +14,6 @@
         public const string Column_IsAdmin = "IsAdmin";
         public const string Column_IsOperator = "IsOperator";
         public const string Column_IsEnable = "IsEnable";
-        public const string Column_OnlineState = "OnlineState";
         public const string Column_Credits = "Credits";
         public const string Column_Materials = "Materials";
         public const string Column_GameTime = "GameTime";
diff --git a/FunGame.Desktop/Model/LoginModel.cs b/FunGame.Desktop/Model/LoginModel.cs
index 2ea3f91..f87d35b 100644
--- a/FunGame.Desktop/Model/LoginModel.cs
+++ b/FunGame.Desktop/Model/LoginModel.cs
@@ -1,6 +1,6 @@
-using Milimoe.FunGame.Core.Api.Utility;
+using System.Data;
+using Milimoe.FunGame.Core.Api.Utility;
 using Milimoe.FunGame.Core.Entity;
-using Milimoe.FunGame.Core.Library.Common.Event;
 using Milimoe.FunGame.Core.Library.Common.Architecture;
 using Milimoe.FunGame.Core.Library.Common.Network;
 using Milimoe.FunGame.Core.Library.Constant;
@@ -126,12 +126,13 @@ namespace Milimoe.FunGame.Desktop.Model
 
         private static void SocketHandler_CheckLogin(SocketObject SocketObject)
         {
-            // 返回的objs是该Login的User对象的各个属性
+            // 返回构造User对象的DataTable
             object[] objs = SocketObject.Parameters;
             if (objs != null && objs.Length > 0)
             {
+                DataSet? Set = SocketObject.GetParam<DataSet>(0);
                 // 创建User对象并返回到Main
-                RunTime.Main?.UpdateUI(MainInvokeType.SetUser, new object[] { Factory.New<User>(objs) });
+                RunTime.Main?.UpdateUI(MainInvokeType.SetUser, new object[] { Factory.GetInstance<User>(Set) });
                 RunTime.Login?.OnSucceedLoginEvent(Login.EventArgs);
                 RunTime.Login?.OnAfterLoginEvent(Login.EventArgs);
                 return;