diff --git a/Entity/Item/Item.cs b/Entity/Item/Item.cs
index 8e4b865..c1d67ad 100644
--- a/Entity/Item/Item.cs
+++ b/Entity/Item/Item.cs
@@ -347,12 +347,12 @@ namespace Milimoe.FunGame.Core.Entity
             if (Skills.Active != null) builder.AppendLine($"{Skills.Active.ToString()}");
             foreach (Skill skill in Skills.Passives)
             {
-                builder.AppendLine($"{skill.ToString()}");
+                builder.Append($"{skill.ToString()}");
             }
 
             if (BackgroundStory != "")
             {
-                builder.AppendLine("\r\n" + BackgroundStory);
+                builder.AppendLine($"\"{BackgroundStory}\"");
             }
 
             return builder.ToString();
@@ -369,21 +369,21 @@ namespace Milimoe.FunGame.Core.Entity
         }
 
         /// <summary>
-        /// 设置一些属性给从 <see cref="ItemModule"/> 新建来的 <paramref name="item"/><para/>
-        /// 通常，在使用 JSON 反序列化 Item，且从 <see cref="ItemModule.GetItem(long, string, ItemType)"/> 中获取了实例后，需要使用此方法复制给新实例
+        /// 设置一些属性给从 <see cref="ItemModule"/> 新建来的 <paramref name="newbyItemModule"/><para/>
+        /// 对于还原存档而言，在使用 JSON 反序列化 Item，且从 <see cref="ItemModule.GetItem"/> 中获取了实例后，需要使用此方法复制给新实例
         /// </summary>
-        /// <param name="item"></param>
-        public void SetPropertyToItemModuleNew(Item item)
+        /// <param name="newbyItemModule"></param>
+        public void SetPropertyToItemModuleNew(Item newbyItemModule)
         {
-            item.WeaponType = WeaponType;
-            item.EquipSlotType = EquipSlotType;
-            item.Equipable = Equipable;
-            item.IsPurchasable = IsPurchasable;
-            item.Price = Price;
-            item.IsSellable = IsSellable;
-            item.NextSellableTime = NextSellableTime;
-            item.IsTradable = IsTradable;
-            item.NextTradableTime = NextTradableTime;
+            newbyItemModule.WeaponType = WeaponType;
+            newbyItemModule.EquipSlotType = EquipSlotType;
+            newbyItemModule.Equipable = Equipable;
+            newbyItemModule.IsPurchasable = IsPurchasable;
+            newbyItemModule.Price = Price;
+            newbyItemModule.IsSellable = IsSellable;
+            newbyItemModule.NextSellableTime = NextSellableTime;
+            newbyItemModule.IsTradable = IsTradable;
+            newbyItemModule.NextTradableTime = NextTradableTime;
         }
 
         /// <summary>
diff --git a/Entity/Skill/Skill.cs b/Entity/Skill/Skill.cs
index c22355f..e2039a1 100644
--- a/Entity/Skill/Skill.cs
+++ b/Entity/Skill/Skill.cs
@@ -2,6 +2,7 @@
 using Milimoe.FunGame.Core.Api.Utility;
 using Milimoe.FunGame.Core.Interface.Base;
 using Milimoe.FunGame.Core.Interface.Entity;
+using Milimoe.FunGame.Core.Library.Common.Addon;
 using Milimoe.FunGame.Core.Library.Constant;
 
 namespace Milimoe.FunGame.Core.Entity
@@ -47,7 +48,7 @@ namespace Milimoe.FunGame.Core.Entity
         /// 技能类型 [ 此项为最高优先级 ]
         /// </summary>
         [InitRequired]
-        public SkillType SkillType { get; set; }
+        public SkillType SkillType { get; set; } = SkillType.Passive;
 
         /// <summary>
         /// 是否是主动技能 [ 此项为高优先级 ]
@@ -168,6 +169,18 @@ namespace Milimoe.FunGame.Core.Entity
         /// </summary>
         internal Skill() { }
 
+        /// <summary>
+        /// 设置一些属性给从 <see cref="SkillModule"/> 新建来的 <paramref name="newbySkillModule"/><para/>
+        /// 对于还原存档而言，在使用 JSON 反序列化 Skill，且从 <see cref="SkillModule.GetSkill"/> 中获取了实例后，需要使用此方法复制给新实例
+        /// </summary>
+        /// <param name="newbySkillModule"></param>
+        public void SetPropertyToItemModuleNew(Skill newbySkillModule)
+        {
+            newbySkillModule.Enable = Enable;
+            newbySkillModule.IsInEffect = IsInEffect;
+            newbySkillModule.CurrentCD = CurrentCD;
+        }
+
         /// <summary>
         /// 触发技能升级
         /// </summary>
@@ -243,7 +256,7 @@ namespace Milimoe.FunGame.Core.Entity
             string type = IsSuperSkill ? "【爆发技】" : (IsMagic ? "【魔法】" : (IsActive ? "【主动】" : "【被动】"));
             string level = Level > 0 ? " - 等级 " + Level : " - 尚未学习";
             builder.AppendLine(type + Name + level);
-            builder.AppendLine("技能描述：" + Description);
+            builder.AppendLine("技能描述：" + (Level == 0 && GeneralDescription.Trim() != "" ? GeneralDescription : Description));
             if (CurrentCD > 0)
             {
                 builder.AppendLine($"正在冷却：剩余 {CurrentCD:0.##} 时间");
diff --git a/Library/Common/Addon/ItemModule.cs b/Library/Common/Addon/ItemModule.cs
index 74c253b..464ee47 100644
--- a/Library/Common/Addon/ItemModule.cs
+++ b/Library/Common/Addon/ItemModule.cs
@@ -1,4 +1,5 @@
-using Milimoe.FunGame.Core.Entity;
+using Milimoe.FunGame.Core.Api.Utility;
+using Milimoe.FunGame.Core.Entity;
 using Milimoe.FunGame.Core.Interface.Addons;
 using Milimoe.FunGame.Core.Library.Constant;
 
@@ -37,13 +38,16 @@ namespace Milimoe.FunGame.Core.Library.Common.Addon
         private bool IsLoaded = false;
 
         /// <summary>
-        /// 必须重写此方法，用于还原物品后获取还原详细信息
+        /// [可选实现] 在使用 <see cref="EntityModuleConfig{Item}"/> 后，可以按 id + name + type 来匹配已编码的物品
         /// </summary>
         /// <param name="id"></param>
         /// <param name="name"></param>
         /// <param name="type"></param>
         /// <returns></returns>
-        public abstract Item? GetItem(long id, string name, ItemType type);
+        public virtual Item? GetItem(long id, string name, ItemType type)
+        {
+            return null;
+        }
 
         /// <summary>
         /// 加载模组
diff --git a/Library/Common/Addon/SkillModule.cs b/Library/Common/Addon/SkillModule.cs
index b48a4ad..b1f01fa 100644
--- a/Library/Common/Addon/SkillModule.cs
+++ b/Library/Common/Addon/SkillModule.cs
@@ -1,4 +1,5 @@
-using Milimoe.FunGame.Core.Entity;
+using Milimoe.FunGame.Core.Api.Utility;
+using Milimoe.FunGame.Core.Entity;
 using Milimoe.FunGame.Core.Interface.Addons;
 using Milimoe.FunGame.Core.Library.Constant;
 
@@ -37,13 +38,16 @@ namespace Milimoe.FunGame.Core.Library.Common.Addon
         private bool IsLoaded = false;
 
         /// <summary>
-        /// 必须重写此方法，用于还原技能后获取还原详细信息
+        /// [可选实现] 在使用 <see cref="EntityModuleConfig{Skill}"/> 后，可以按 id + name + type 来匹配已编码的技能
         /// </summary>
         /// <param name="id"></param>
         /// <param name="name"></param>
         /// <param name="type"></param>
         /// <returns></returns>
-        public abstract Skill? GetSkill(long id, string name, SkillType type);
+        public virtual Skill? GetSkill(long id, string name, SkillType type)
+        {
+            return null;
+        }
 
         /// <summary>
         /// 加载模组
diff --git a/Library/Common/JsonConverter/ItemConverter.cs b/Library/Common/JsonConverter/ItemConverter.cs
index ce45eb2..b184e8b 100644
--- a/Library/Common/JsonConverter/ItemConverter.cs
+++ b/Library/Common/JsonConverter/ItemConverter.cs
@@ -23,6 +23,15 @@ namespace Milimoe.FunGame.Core.Library.Common.JsonConverter
                 case nameof(Item.Name):
                     result.Name = reader.GetString() ?? "";
                     break;
+                case nameof(Item.Description):
+                    result.Description = reader.GetString() ?? "";
+                    break;
+                case nameof(Item.GeneralDescription):
+                    result.GeneralDescription = reader.GetString() ?? "";
+                    break;
+                case nameof(Item.BackgroundStory):
+                    result.BackgroundStory = reader.GetString() ?? "";
+                    break;
                 case nameof(Item.ItemType):
                     result.ItemType = (ItemType)reader.GetInt32();
                     break;
@@ -32,6 +41,9 @@ namespace Milimoe.FunGame.Core.Library.Common.JsonConverter
                 case nameof(Item.EquipSlotType):
                     result.EquipSlotType = (EquipSlotType)reader.GetInt32();
                     break;
+                case nameof(Item.IsInGameItem):
+                    result.IsInGameItem = reader.GetBoolean();
+                    break;
                 case nameof(Item.Equipable):
                     result.Equipable = reader.GetBoolean();
                     break;
@@ -46,24 +58,30 @@ namespace Milimoe.FunGame.Core.Library.Common.JsonConverter
                     break;
                 case nameof(Item.NextSellableTime):
                     string dateString = reader.GetString() ?? "";
-                    if (DateTime.TryParseExact(dateString, General.GeneralDateTimeFormat, null, System.Globalization.DateTimeStyles.None, out DateTime date))
+                    if (DateTime.TryParseExact(dateString, General.GeneralDateTimeFormat, null, System.Globalization.DateTimeStyles.None, out DateTime sellableDate))
                     {
-                        result.NextSellableTime = date;
+                        result.NextSellableTime = sellableDate;
+                    }
+                    else
+                    {
+                        result.NextSellableTime = DateTime.MinValue;
                     }
-                    else result.NextSellableTime = DateTime.MinValue;
                     break;
                 case nameof(Item.IsTradable):
                     result.IsTradable = reader.GetBoolean();
                     break;
                 case nameof(Item.NextTradableTime):
                     dateString = reader.GetString() ?? "";
-                    if (DateTime.TryParseExact(dateString, General.GeneralDateTimeFormat, null, System.Globalization.DateTimeStyles.None, out date))
+                    if (DateTime.TryParseExact(dateString, General.GeneralDateTimeFormat, null, System.Globalization.DateTimeStyles.None, out DateTime tradableDate))
                     {
-                        result.NextTradableTime = date;
+                        result.NextTradableTime = tradableDate;
+                    }
+                    else
+                    {
+                        result.NextTradableTime = DateTime.MinValue;
                     }
-                    else result.NextTradableTime = DateTime.MinValue;
                     break;
-                case nameof(Character.Skills):
+                case nameof(Item.Skills):
                     SkillGroup skills = NetworkUtility.JsonDeserialize<SkillGroup>(ref reader, options) ?? new();
                     result.Skills.Active = skills.Active;
                     result.Skills.Passives = skills.Passives;
@@ -77,16 +95,26 @@ namespace Milimoe.FunGame.Core.Library.Common.JsonConverter
 
             writer.WriteNumber(nameof(Item.Id), (int)value.Id);
             writer.WriteString(nameof(Item.Name), value.Name);
+            writer.WriteString(nameof(Item.Description), value.Description);
+            writer.WriteString(nameof(Item.GeneralDescription), value.GeneralDescription);
+            writer.WriteString(nameof(Item.BackgroundStory), value.BackgroundStory);
             writer.WriteNumber(nameof(Item.ItemType), (int)value.ItemType);
             writer.WriteNumber(nameof(Item.WeaponType), (int)value.WeaponType);
             writer.WriteNumber(nameof(Item.EquipSlotType), (int)value.EquipSlotType);
+            writer.WriteBoolean(nameof(Item.IsInGameItem), value.IsInGameItem);
             writer.WriteBoolean(nameof(Item.Equipable), value.Equipable);
             writer.WriteBoolean(nameof(Item.IsPurchasable), value.IsPurchasable);
             writer.WriteNumber(nameof(Item.Price), value.Price);
-            writer.WriteBoolean(nameof(Item.IsSellable), value.IsSellable);
-            writer.WriteString(nameof(Item.NextSellableTime), value.NextSellableTime.ToString(General.GeneralDateTimeFormat));
-            writer.WriteBoolean(nameof(Item.IsTradable), value.IsTradable);
-            writer.WriteString(nameof(Item.NextTradableTime), value.NextTradableTime.ToString(General.GeneralDateTimeFormat));
+            if (!value.IsSellable)
+            {
+                writer.WriteBoolean(nameof(Item.IsSellable), value.IsSellable);
+                writer.WriteString(nameof(Item.NextSellableTime), value.NextSellableTime.ToString(General.GeneralDateTimeFormat));
+            }
+            if (!value.IsTradable)
+            {
+                writer.WriteBoolean(nameof(Item.IsTradable), value.IsTradable);
+                writer.WriteString(nameof(Item.NextTradableTime), value.NextTradableTime.ToString(General.GeneralDateTimeFormat));
+            }
             writer.WritePropertyName(nameof(Item.Skills));
             JsonSerializer.Serialize(writer, value.Skills, options);
 
diff --git a/Library/Common/JsonConverter/SkillConverter.cs b/Library/Common/JsonConverter/SkillConverter.cs
index 312041a..67a06c1 100644
--- a/Library/Common/JsonConverter/SkillConverter.cs
+++ b/Library/Common/JsonConverter/SkillConverter.cs
@@ -1,4 +1,5 @@
 using System.Text.Json;
+using Milimoe.FunGame.Core.Api.Utility;
 using Milimoe.FunGame.Core.Entity;
 using Milimoe.FunGame.Core.Library.Common.Architecture;
 using Milimoe.FunGame.Core.Library.Constant;
@@ -22,9 +23,56 @@ namespace Milimoe.FunGame.Core.Library.Common.JsonConverter
                 case nameof(Skill.Name):
                     result.Name = reader.GetString() ?? "";
                     break;
+                case nameof(Skill.Description):
+                    result.Description = reader.GetString() ?? "";
+                    break;
+                case nameof(Skill.GeneralDescription):
+                    result.GeneralDescription = reader.GetString() ?? "";
+                    break;
+                case nameof(Skill.Level):
+                    result.Level = reader.GetInt32();
+                    break;
                 case nameof(Skill.SkillType):
                     result.SkillType = (SkillType)reader.GetInt32();
                     break;
+                case nameof(Skill.Enable):
+                    result.Enable = reader.GetBoolean();
+                    break;
+                case nameof(Skill.IsInEffect):
+                    result.IsInEffect = reader.GetBoolean();
+                    break;
+                case nameof(Skill.MPCost):
+                    result.MPCost = reader.GetDouble();
+                    break;
+                case nameof(Skill.EPCost):
+                    result.EPCost = reader.GetDouble();
+                    break;
+                case nameof(Skill.CastTime):
+                    result.CastTime = reader.GetDouble();
+                    break;
+                case nameof(Skill.CD):
+                    result.CD = reader.GetDouble();
+                    break;
+                case nameof(Skill.CurrentCD):
+                    result.CurrentCD = reader.GetDouble();
+                    break;
+                case nameof(Skill.HardnessTime):
+                    result.HardnessTime = reader.GetDouble();
+                    break;
+                case nameof(Skill.Effects):
+                    HashSet<Effect> effects = NetworkUtility.JsonDeserialize<HashSet<Effect>>(ref reader, options) ?? [];
+                    foreach (Effect effect in effects)
+                    {
+                        result.Effects.Add(effect);
+                    }
+                    break;
+                case nameof(Skill.OtherArgs):
+                    Dictionary<string, object> others = NetworkUtility.JsonDeserialize<Dictionary<string, object>>(ref reader, options) ?? [];
+                    foreach (string key in others.Keys)
+                    {
+                        result.OtherArgs.Add(key, others[key]);
+                    }
+                    break;
             }
         }
 
@@ -34,7 +82,22 @@ namespace Milimoe.FunGame.Core.Library.Common.JsonConverter
 
             writer.WriteNumber(nameof(Skill.Id), (int)value.Id);
             writer.WriteString(nameof(Skill.Name), value.Name);
+            writer.WriteString(nameof(Skill.Description), value.Description);
+            if (value.GeneralDescription.Length > 0) writer.WriteString(nameof(Skill.GeneralDescription), value.GeneralDescription);
+            if (value.Level > 0) writer.WriteNumber(nameof(Skill.Level), value.Level);
             writer.WriteNumber(nameof(Skill.SkillType), (int)value.SkillType);
+            if (!value.Enable) writer.WriteBoolean(nameof(Skill.Enable), value.Enable);
+            if (value.IsInEffect) writer.WriteBoolean(nameof(Skill.IsInEffect), value.IsInEffect);
+            if (value.MPCost > 0) writer.WriteNumber(nameof(Skill.MPCost), value.MPCost);
+            if (value.EPCost > 0) writer.WriteNumber(nameof(Skill.EPCost), value.EPCost);
+            if (value.CastTime > 0) writer.WriteNumber(nameof(Skill.CastTime), value.CastTime);
+            if (value.CD > 0) writer.WriteNumber(nameof(Skill.CD), value.CD);
+            if (value.CurrentCD > 0) writer.WriteNumber(nameof(Skill.CurrentCD), value.CurrentCD);
+            if (value.HardnessTime > 0) writer.WriteNumber(nameof(Skill.HardnessTime), value.HardnessTime);
+            writer.WritePropertyName(nameof(Skill.Effects));
+            JsonSerializer.Serialize(writer, value.Effects, options);
+            writer.WritePropertyName(nameof(Skill.OtherArgs));
+            JsonSerializer.Serialize(writer, value.OtherArgs, options);
 
             writer.WriteEndObject();
         }
diff --git a/Library/SQLScript/Common/Common.cs b/Library/SQLScript/Common/Common.cs
index d8e9b36..ddd1554 100644
--- a/Library/SQLScript/Common/Common.cs
+++ b/Library/SQLScript/Common/Common.cs
@@ -40,5 +40,10 @@ namespace Milimoe.FunGame.Core.Library.SQLScript.Common
         {
             return $"{Command_Insert} {Command_Into} {TableName} ({Column_ServerName}, {Column_ServerKey}, {Column_LoginTime}) {Command_Values} ('{ServerName}', '{ServerKey}', '{DateTime.Now}')";
         }
+
+        public static string Select_GetLastLoginTime()
+        {
+            return $"{Command_Select} Max({Column_LoginTime}) {Command_From} {TableName}";
+        }
     }
 }