diff --git a/Entity/Character/Character.cs b/Entity/Character/Character.cs
index b61706b..82c8dcc 100644
--- a/Entity/Character/Character.cs
+++ b/Entity/Character/Character.cs
@@ -8,7 +8,6 @@ namespace Milimoe.FunGame.Core.Entity
     /// <summary>
     /// 角色需要使用 Factory.Get 的方式来构造，并赋值 <see cref="InitRequired"/> 标记的属性<para />
     /// 在使用时仅需要调用 <see cref="Copy"/> 方法即可获得相同对象<para />
-    /// 不建议继承
     /// </summary>
     public class Character : BaseEntity
     {
diff --git a/Entity/Character/Unit.cs b/Entity/Character/Unit.cs
new file mode 100644
index 0000000..d4f72c5
--- /dev/null
+++ b/Entity/Character/Unit.cs
@@ -0,0 +1,481 @@
+using System.Text;
+using Milimoe.FunGame.Core.Api.Utility;
+using Milimoe.FunGame.Core.Library.Constant;
+
+namespace Milimoe.FunGame.Core.Entity
+{
+    /// <summary>
+    /// <see cref="Unit"/> 是一个用于描述生物的单元对象（单位），而 <see cref="Character"/> 是一种高级单位（单位单位/英雄单位）<para />
+    /// 和单位一样，使用 <see cref="InitRequired"/> 标记的需要初始赋值的属性<para />
+    /// </summary>
+    public class Unit : Character
+    {
+        /// <summary>
+        /// 单位名称
+        /// </summary>
+        public override string Name { get; set; } = "";
+
+        /// <summary>
+        /// 获取单位名称以及所属玩家
+        /// </summary>
+        /// <returns></returns>
+        public override string ToString()
+        {
+            string str = Name;
+            if (User != null && User.Username != "")
+            {
+                str += "(" + User.Username + ")";
+            }
+            return str;
+        }
+
+        /// <summary>
+        /// 获取单位名称以及所属玩家，包含等级
+        /// </summary>
+        /// <returns></returns>
+        public new string ToStringWithLevel()
+        {
+            string str = Name + " - 等级 " + Level;
+            if (User != null && User.Username != "")
+            {
+                str += "（" + User.Username + "）";
+            }
+            return str;
+        }
+
+        /// <summary>
+        /// 获取单位的详细信息
+        /// </summary>
+        /// <returns></returns>
+        public new string GetInfo(bool showUser = true, bool showGrowth = true, bool showEXP = false)
+        {
+            StringBuilder builder = new();
+
+            builder.AppendLine(showUser ? ToStringWithLevel() : ToStringWithLevelWithOutUser());
+            builder.AppendLine($"等级：{Level} / {General.GameplayEquilibriumConstant.MaxLevel}");
+            double exHP = ExHP + ExHP2 + ExHP3;
+            builder.AppendLine($"生命值：{HP:0.##} / {MaxHP:0.##}" + (exHP != 0 ? $" [{BaseHP:0.##} {(exHP >= 0 ? "+" : "-")} {Math.Abs(exHP):0.##}]" : ""));
+            double exMP = ExMP + ExMP2 + ExMP3;
+            builder.AppendLine($"魔法值：{MP:0.##} / {MaxMP:0.##}" + (exMP != 0 ? $" [{BaseMP:0.##} {(exMP >= 0 ? "+" : "-")} {Math.Abs(exMP):0.##}]" : ""));
+            double exATK = ExATK + ExATK2 + ExATK3;
+            builder.AppendLine($"攻击力：{ATK:0.##}" + (exATK != 0 ? $" [{BaseATK:0.##} {(exATK >= 0 ? "+" : "-")} {Math.Abs(exATK):0.##}]" : ""));
+            double exDEF = ExDEF + ExDEF2 + ExDEF3;
+            builder.AppendLine($"物理护甲：{DEF:0.##}" + (exDEF != 0 ? $" [{BaseDEF:0.##} {(exMP >= 0 ? "+" : "-")} {Math.Abs(exDEF):0.##}]" : "") + $" ({PDR * 100:0.##}%)");
+            double mdf = Calculation.Round4Digits((MDF.None + MDF.Starmark + MDF.PurityNatural + MDF.PurityContemporary +
+                MDF.Bright + MDF.Shadow + MDF.Element + MDF.Fleabane + MDF.Particle) / 9) * 100;
+            if (Calculation.IsApproximatelyZero(mdf)) mdf = 0;
+            builder.AppendLine($"魔法抗性：{mdf:0.##}%（平均）");
+            double exSPD = AGI * General.GameplayEquilibriumConstant.AGItoSPDMultiplier + ExSPD;
+            builder.AppendLine($"行动速度：{SPD:0.##}" + (exSPD != 0 ? $" [{InitialSPD:0.##} {(exSPD >= 0 ? "+" : "-")} {Math.Abs(exSPD):0.##}]" : "") + $" ({ActionCoefficient * 100:0.##}%)");
+            builder.AppendLine($"生命回复：{HR:0.##}" + (ExHR != 0 ? $" [{InitialHR + STR * General.GameplayEquilibriumConstant.STRtoHRFactor:0.##} {(ExHR >= 0 ? "+" : "-")} {Math.Abs(ExHR):0.##}]" : ""));
+            builder.AppendLine($"魔法回复：{MR:0.##}" + (ExMR != 0 ? $" [{InitialMR + INT * General.GameplayEquilibriumConstant.INTtoMRFactor:0.##} {(ExMR >= 0 ? "+" : "-")} {Math.Abs(ExMR):0.##}]" : ""));
+            builder.AppendLine($"暴击率：{CritRate * 100:0.##}%");
+            builder.AppendLine($"暴击伤害：{CritDMG * 100:0.##}%");
+            builder.AppendLine($"闪避率：{EvadeRate * 100:0.##}%");
+            builder.AppendLine($"冷却缩减：{CDR * 100:0.##}%");
+            builder.AppendLine($"加速系数：{AccelerationCoefficient * 100:0.##}%");
+            builder.AppendLine($"物理穿透：{PhysicalPenetration * 100:0.##}%");
+            builder.AppendLine($"魔法穿透：{MagicalPenetration * 100:0.##}%");
+
+            if (CharacterState != CharacterState.Actionable)
+            {
+                builder.AppendLine(CharacterSet.GetCharacterState(CharacterState));
+            }
+
+            if (IsNeutral)
+            {
+                builder.AppendLine("单位是无敌的");
+            }
+
+            if (IsUnselectable)
+            {
+                builder.AppendLine("单位是不可选中的");
+            }
+
+            builder.AppendLine("== 普通攻击 ==");
+            builder.Append(NormalAttack.ToString());
+
+            if (Skills.Count > 0)
+            {
+                builder.AppendLine("== 单位技能 ==");
+                foreach (Skill skill in Skills)
+                {
+                    builder.Append(skill.ToString());
+                }
+            }
+
+            if (EquipSlot.Any())
+            {
+                builder.AppendLine("== 装备栏 ==");
+                if (EquipSlot.MagicCardPack != null)
+                {
+                    builder.AppendLine($"[{ItemSet.GetQualityTypeName(EquipSlot.MagicCardPack.QualityType)}]" + ItemSet.GetEquipSlotTypeName(EquipSlotType.MagicCardPack) + "：" + EquipSlot.MagicCardPack.Name);
+                    builder.AppendLine(EquipSlot.MagicCardPack.Description);
+                }
+                if (EquipSlot.Weapon != null)
+                {
+                    builder.AppendLine($"[{ItemSet.GetQualityTypeName(EquipSlot.Weapon.QualityType)}]" + ItemSet.GetEquipSlotTypeName(EquipSlotType.Weapon) + "：" + EquipSlot.Weapon.Name);
+                    builder.AppendLine(EquipSlot.Weapon.Description);
+                }
+                if (EquipSlot.Armor != null)
+                {
+                    builder.AppendLine($"[{ItemSet.GetQualityTypeName(EquipSlot.Armor.QualityType)}]" + ItemSet.GetEquipSlotTypeName(EquipSlotType.Armor) + "：" + EquipSlot.Armor.Name);
+                    builder.AppendLine(EquipSlot.Armor.Description);
+                }
+                if (EquipSlot.Shoes != null)
+                {
+                    builder.AppendLine($"[{ItemSet.GetQualityTypeName(EquipSlot.Shoes.QualityType)}]" + ItemSet.GetEquipSlotTypeName(EquipSlotType.Shoes) + "：" + EquipSlot.Shoes.Name);
+                    builder.AppendLine(EquipSlot.Shoes.Description);
+                }
+                if (EquipSlot.Accessory1 != null)
+                {
+                    builder.AppendLine($"[{ItemSet.GetQualityTypeName(EquipSlot.Accessory1.QualityType)}]" + ItemSet.GetEquipSlotTypeName(EquipSlotType.Accessory1) + "：" + EquipSlot.Accessory1.Name);
+                    builder.AppendLine(EquipSlot.Accessory1.Description);
+                }
+                if (EquipSlot.Accessory2 != null)
+                {
+                    builder.AppendLine($"[{ItemSet.GetQualityTypeName(EquipSlot.Accessory2.QualityType)}]" + ItemSet.GetEquipSlotTypeName(EquipSlotType.Accessory2) + "：" + EquipSlot.Accessory2.Name);
+                    builder.AppendLine(EquipSlot.Accessory2.Description);
+                }
+            }
+
+            if (Items.Count > 0)
+            {
+                builder.AppendLine("== 单位背包 ==");
+                foreach (Item item in Items)
+                {
+                    builder.Append(item.ToString());
+                }
+            }
+
+            if (Effects.Where(e => e.EffectType != EffectType.Item).Any())
+            {
+                builder.AppendLine("== 状态栏 ==");
+                foreach (Effect effect in Effects.Where(e => e.EffectType != EffectType.Item))
+                {
+                    builder.Append(effect.ToString());
+                }
+            }
+
+            /**
+             * 意义不明（✖）的代码
+             */
+            if (showGrowth == showEXP)
+            {
+                showGrowth.ToString();
+            }
+
+            return builder.ToString();
+        }
+
+        /// <summary>
+        /// 获取单位的简略信息
+        /// </summary>
+        /// <returns></returns>
+        public new string GetSimpleInfo(bool showUser = true, bool showGrowth = true, bool showEXP = false, bool showBasicOnly = false)
+        {
+            StringBuilder builder = new();
+
+            builder.AppendLine(showUser ? ToStringWithLevel() : ToStringWithLevelWithOutUser());
+            builder.AppendLine($"等级：{Level} / {General.GameplayEquilibriumConstant.MaxLevel}");
+            double exHP = ExHP + ExHP2 + ExHP3;
+            builder.AppendLine($"生命值：{HP:0.##} / {MaxHP:0.##}" + (exHP != 0 ? $" [{BaseHP:0.##} {(exHP >= 0 ? "+" : "-")} {Math.Abs(exHP):0.##}]" : ""));
+            double exMP = ExMP + ExMP2 + ExMP3;
+            builder.AppendLine($"魔法值：{MP:0.##} / {MaxMP:0.##}" + (exMP != 0 ? $" [{BaseMP:0.##} {(exMP >= 0 ? "+" : "-")} {Math.Abs(exMP):0.##}]" : ""));
+            double exATK = ExATK + ExATK2 + ExATK3;
+            builder.AppendLine($"攻击力：{ATK:0.##}" + (exATK != 0 ? $" [{BaseATK:0.##} {(exATK >= 0 ? "+" : "-")} {Math.Abs(exATK):0.##}]" : ""));
+            double exDEF = ExDEF + ExDEF2 + ExDEF3;
+            builder.AppendLine($"物理护甲：{DEF:0.##}" + (exDEF != 0 ? $" [{BaseDEF:0.##} {(exMP >= 0 ? "+" : "-")} {Math.Abs(exDEF):0.##}]" : "") + $" ({PDR * 100:0.##}%)");
+            double mdf = Calculation.Round4Digits((MDF.None + MDF.Starmark + MDF.PurityNatural + MDF.PurityContemporary +
+                MDF.Bright + MDF.Shadow + MDF.Element + MDF.Fleabane + MDF.Particle) / 9) * 100;
+            if (Calculation.IsApproximatelyZero(mdf)) mdf = 0;
+            builder.AppendLine($"魔法抗性：{mdf:0.##}%（平均）");
+            double exSPD = AGI * General.GameplayEquilibriumConstant.AGItoSPDMultiplier + ExSPD;
+            builder.AppendLine($"行动速度：{SPD:0.##}" + (exSPD != 0 ? $" [{InitialSPD:0.##} {(exSPD >= 0 ? "+" : "-")} {Math.Abs(exSPD):0.##}]" : "") + $" ({ActionCoefficient * 100:0.##}%)");
+            builder.AppendLine($"生命回复：{HR:0.##}" + (ExHR != 0 ? $" [{InitialHR + STR * General.GameplayEquilibriumConstant.STRtoHRFactor:0.##} {(ExHR >= 0 ? "+" : "-")} {Math.Abs(ExHR):0.##}]" : ""));
+            builder.AppendLine($"魔法回复：{MR:0.##}" + (ExMR != 0 ? $" [{InitialMR + INT * General.GameplayEquilibriumConstant.INTtoMRFactor:0.##} {(ExMR >= 0 ? "+" : "-")} {Math.Abs(ExMR):0.##}]" : ""));
+
+            if (!showBasicOnly)
+            {
+                if (CharacterState != CharacterState.Actionable)
+                {
+                    builder.AppendLine(CharacterSet.GetCharacterState(CharacterState));
+                }
+
+                if (IsNeutral)
+                {
+                    builder.AppendLine("单位是无敌的");
+                }
+
+                if (IsUnselectable)
+                {
+                    builder.AppendLine("单位是不可选中的");
+                }
+
+                if (Skills.Count > 0)
+                {
+                    builder.AppendLine("== 单位技能 ==");
+                    builder.AppendLine(string.Join("，", Skills.Select(s => s.Name)));
+                }
+
+                if (EquipSlot.Any())
+                {
+                    builder.AppendLine("== 已装备槽位 ==");
+                    List<EquipSlotType> types = [];
+                    if (EquipSlot.MagicCardPack != null)
+                    {
+                        types.Add(EquipSlotType.MagicCardPack);
+                    }
+                    if (EquipSlot.Weapon != null)
+                    {
+                        types.Add(EquipSlotType.Weapon);
+                    }
+                    if (EquipSlot.Armor != null)
+                    {
+                        types.Add(EquipSlotType.Armor);
+                    }
+                    if (EquipSlot.Shoes != null)
+                    {
+                        types.Add(EquipSlotType.Shoes);
+                    }
+                    if (EquipSlot.Accessory1 != null)
+                    {
+                        types.Add(EquipSlotType.Accessory1);
+                    }
+                    if (EquipSlot.Accessory2 != null)
+                    {
+                        types.Add(EquipSlotType.Accessory2);
+                    }
+                    builder.AppendLine(string.Join("，", types.Select(ItemSet.GetEquipSlotTypeName)));
+                }
+
+                if (Effects.Where(e => e.EffectType != EffectType.Item).Any())
+                {
+                    builder.AppendLine("== 状态栏 ==");
+                    builder.Append(string.Join("，", Effects.Where(e => e.EffectType != EffectType.Item).Select(e => e.Name)));
+                }
+            }
+
+            /**
+             * 意义不明（✖）的代码
+             */
+            if (showGrowth == showEXP)
+            {
+                showGrowth.ToString();
+            }
+
+            return builder.ToString();
+        }
+
+        /// <summary>
+        /// 获取战斗状态的信息
+        /// </summary>
+        /// <param name="hardnessTimes"></param>
+        /// <returns></returns>
+        public new string GetInBattleInfo(double hardnessTimes)
+        {
+            StringBuilder builder = new();
+
+            builder.AppendLine(ToStringWithLevel());
+            double exHP = ExHP + ExHP2 + ExHP3;
+            builder.AppendLine($"生命值：{HP:0.##} / {MaxHP:0.##}" + (exHP != 0 ? $" [{BaseHP:0.##} {(exHP >= 0 ? "+" : "-")} {Math.Abs(exHP):0.##}]" : ""));
+            double exMP = ExMP + ExMP2 + ExMP3;
+            builder.AppendLine($"魔法值：{MP:0.##} / {MaxMP:0.##}" + (exMP != 0 ? $" [{BaseMP:0.##} {(exMP >= 0 ? "+" : "-")} {Math.Abs(exMP):0.##}]" : ""));
+            double exATK = ExATK + ExATK2 + ExATK3;
+            builder.AppendLine($"攻击力：{ATK:0.##}" + (exATK != 0 ? $" [{BaseATK:0.##} {(exATK >= 0 ? "+" : "-")} {Math.Abs(exATK):0.##}]" : ""));
+
+            if (CharacterState != CharacterState.Actionable)
+            {
+                builder.AppendLine(CharacterSet.GetCharacterState(CharacterState));
+            }
+
+            if (IsNeutral)
+            {
+                builder.AppendLine("单位是中立单位，处于无敌状态");
+            }
+
+            if (IsUnselectable)
+            {
+                builder.AppendLine("单位是不可选中的");
+            }
+
+            builder.AppendLine($"硬直时间：{hardnessTimes:0.##}");
+
+            if (Effects.Where(e => e.EffectType != EffectType.Item).Any())
+            {
+                builder.AppendLine("== 状态栏 ==");
+                foreach (Effect effect in Effects.Where(e => e.EffectType != EffectType.Item))
+                {
+                    builder.Append(effect.ToString());
+                }
+            }
+
+            return builder.ToString();
+        }
+
+        /// <summary>
+        /// 获取战斗状态的信息（简略版）
+        /// </summary>
+        /// <param name="hardnessTimes"></param>
+        /// <returns></returns>
+        public new string GetSimpleInBattleInfo(double hardnessTimes)
+        {
+            StringBuilder builder = new();
+
+            builder.AppendLine(ToStringWithLevel());
+            double exHP = ExHP + ExHP2 + ExHP3;
+            builder.AppendLine($"生命值：{HP:0.##} / {MaxHP:0.##}" + (exHP != 0 ? $" [{BaseHP:0.##} {(exHP >= 0 ? "+" : "-")} {Math.Abs(exHP):0.##}]" : ""));
+            double exMP = ExMP + ExMP2 + ExMP3;
+            builder.AppendLine($"魔法值：{MP:0.##} / {MaxMP:0.##}" + (exMP != 0 ? $" [{BaseMP:0.##} {(exMP >= 0 ? "+" : "-")} {Math.Abs(exMP):0.##}]" : ""));
+            double exATK = ExATK + ExATK2 + ExATK3;
+            builder.AppendLine($"攻击力：{ATK:0.##}" + (exATK != 0 ? $" [{BaseATK:0.##} {(exATK >= 0 ? "+" : "-")} {Math.Abs(exATK):0.##}]" : ""));
+            builder.AppendLine($"硬直时间：{hardnessTimes:0.##}");
+
+            if (Effects.Where(e => e.EffectType != EffectType.Item).Any())
+            {
+                builder.AppendLine("== 状态栏 ==");
+                builder.Append(string.Join("，", Effects.Where(e => e.EffectType != EffectType.Item).Select(e => e.Name)));
+            }
+
+            return builder.ToString();
+        }
+
+        /// <summary>
+        /// 获取单位的技能信息
+        /// </summary>
+        /// <returns></returns>
+        public new string GetSkillInfo(bool showUser = true)
+        {
+            StringBuilder builder = new();
+
+            builder.AppendLine(showUser ? ToStringWithLevel() : ToStringWithLevelWithOutUser());
+
+            if (CharacterState != CharacterState.Actionable)
+            {
+                builder.AppendLine(CharacterSet.GetCharacterState(CharacterState));
+            }
+
+            if (IsNeutral)
+            {
+                builder.AppendLine("单位是无敌的");
+            }
+
+            if (IsUnselectable)
+            {
+                builder.AppendLine("单位是不可选中的");
+            }
+
+            builder.AppendLine("== 普通攻击 ==");
+            builder.Append(NormalAttack.ToString());
+
+            if (Skills.Count > 0)
+            {
+                builder.AppendLine("== 单位技能 ==");
+                foreach (Skill skill in Skills)
+                {
+                    builder.Append(skill.ToString());
+                }
+            }
+
+            if (Effects.Where(e => e.EffectType != EffectType.Item).Any())
+            {
+                builder.AppendLine("== 状态栏 ==");
+                foreach (Effect effect in Effects.Where(e => e.EffectType != EffectType.Item))
+                {
+                    builder.Append(effect.ToString());
+                }
+            }
+
+            return builder.ToString();
+        }
+
+        /// <summary>
+        /// 获取单位的物品信息
+        /// </summary>
+        /// <returns></returns>
+        public new string GetItemInfo(bool showUser = true, bool showGrowth = true, bool showEXP = false)
+        {
+            StringBuilder builder = new();
+
+            builder.AppendLine(showUser ? ToStringWithLevel() : ToStringWithLevelWithOutUser());
+            builder.AppendLine($"等级：{Level} / {General.GameplayEquilibriumConstant.MaxLevel}");
+            double exHP = ExHP + ExHP2 + ExHP3;
+            builder.AppendLine($"生命值：{HP:0.##} / {MaxHP:0.##}" + (exHP != 0 ? $" [{BaseHP:0.##} {(exHP >= 0 ? "+" : "-")} {Math.Abs(exHP):0.##}]" : ""));
+            double exMP = ExMP + ExMP2 + ExMP3;
+            builder.AppendLine($"魔法值：{MP:0.##} / {MaxMP:0.##}" + (exMP != 0 ? $" [{BaseMP:0.##} {(exMP >= 0 ? "+" : "-")} {Math.Abs(exMP):0.##}]" : ""));
+            double exATK = ExATK + ExATK2 + ExATK3;
+            builder.AppendLine($"攻击力：{ATK:0.##}" + (exATK != 0 ? $" [{BaseATK:0.##} {(exATK >= 0 ? "+" : "-")} {Math.Abs(exATK):0.##}]" : ""));
+            double exDEF = ExDEF + ExDEF2 + ExDEF3;
+            builder.AppendLine($"物理护甲：{DEF:0.##}" + (exDEF != 0 ? $" [{BaseDEF:0.##} {(exMP >= 0 ? "+" : "-")} {Math.Abs(exDEF):0.##}]" : "") + $" ({PDR * 100:0.##}%)");
+            double mdf = Calculation.Round4Digits((MDF.None + MDF.Starmark + MDF.PurityNatural + MDF.PurityContemporary +
+                MDF.Bright + MDF.Shadow + MDF.Element + MDF.Fleabane + MDF.Particle) / 9) * 100;
+            if (Calculation.IsApproximatelyZero(mdf)) mdf = 0;
+            builder.AppendLine($"魔法抗性：{mdf:0.##}%（平均）");
+            double exSPD = AGI * General.GameplayEquilibriumConstant.AGItoSPDMultiplier + ExSPD;
+            builder.AppendLine($"行动速度：{SPD:0.##}" + (exSPD != 0 ? $" [{InitialSPD:0.##} {(exSPD >= 0 ? "+" : "-")} {Math.Abs(exSPD):0.##}]" : "") + $" ({ActionCoefficient * 100:0.##}%)");
+            builder.AppendLine($"生命回复：{HR:0.##}" + (ExHR != 0 ? $" [{InitialHR + STR * General.GameplayEquilibriumConstant.STRtoHRFactor:0.##} {(ExHR >= 0 ? "+" : "-")} {Math.Abs(ExHR):0.##}]" : ""));
+            builder.AppendLine($"魔法回复：{MR:0.##}" + (ExMR != 0 ? $" [{InitialMR + INT * General.GameplayEquilibriumConstant.INTtoMRFactor:0.##} {(ExMR >= 0 ? "+" : "-")} {Math.Abs(ExMR):0.##}]" : ""));
+            builder.AppendLine($"暴击率：{CritRate * 100:0.##}%");
+            builder.AppendLine($"暴击伤害：{CritDMG * 100:0.##}%");
+            builder.AppendLine($"闪避率：{EvadeRate * 100:0.##}%");
+            builder.AppendLine($"冷却缩减：{CDR * 100:0.##}%");
+            builder.AppendLine($"加速系数：{AccelerationCoefficient * 100:0.##}%");
+            builder.AppendLine($"物理穿透：{PhysicalPenetration * 100:0.##}%");
+            builder.AppendLine($"魔法穿透：{MagicalPenetration * 100:0.##}%");
+
+            if (EquipSlot.Any())
+            {
+                builder.AppendLine("== 装备栏 ==");
+                if (EquipSlot.MagicCardPack != null)
+                {
+                    builder.AppendLine($"[{ItemSet.GetQualityTypeName(EquipSlot.MagicCardPack.QualityType)}]" + ItemSet.GetEquipSlotTypeName(EquipSlotType.MagicCardPack) + "：" + EquipSlot.MagicCardPack.Name);
+                    builder.AppendLine(EquipSlot.MagicCardPack.Description);
+                }
+                if (EquipSlot.Weapon != null)
+                {
+                    builder.AppendLine($"[{ItemSet.GetQualityTypeName(EquipSlot.Weapon.QualityType)}]" + ItemSet.GetEquipSlotTypeName(EquipSlotType.Weapon) + "：" + EquipSlot.Weapon.Name);
+                    builder.AppendLine(EquipSlot.Weapon.Description);
+                }
+                if (EquipSlot.Armor != null)
+                {
+                    builder.AppendLine($"[{ItemSet.GetQualityTypeName(EquipSlot.Armor.QualityType)}]" + ItemSet.GetEquipSlotTypeName(EquipSlotType.Armor) + "：" + EquipSlot.Armor.Name);
+                    builder.AppendLine(EquipSlot.Armor.Description);
+                }
+                if (EquipSlot.Shoes != null)
+                {
+                    builder.AppendLine($"[{ItemSet.GetQualityTypeName(EquipSlot.Shoes.QualityType)}]" + ItemSet.GetEquipSlotTypeName(EquipSlotType.Shoes) + "：" + EquipSlot.Shoes.Name);
+                    builder.AppendLine(EquipSlot.Shoes.Description);
+                }
+                if (EquipSlot.Accessory1 != null)
+                {
+                    builder.AppendLine($"[{ItemSet.GetQualityTypeName(EquipSlot.Accessory1.QualityType)}]" + ItemSet.GetEquipSlotTypeName(EquipSlotType.Accessory1) + "：" + EquipSlot.Accessory1.Name);
+                    builder.AppendLine(EquipSlot.Accessory1.Description);
+                }
+                if (EquipSlot.Accessory2 != null)
+                {
+                    builder.AppendLine($"[{ItemSet.GetQualityTypeName(EquipSlot.Accessory2.QualityType)}]" + ItemSet.GetEquipSlotTypeName(EquipSlotType.Accessory2) + "：" + EquipSlot.Accessory2.Name);
+                    builder.AppendLine(EquipSlot.Accessory2.Description);
+                }
+            }
+
+            if (Items.Count > 0)
+            {
+                builder.AppendLine("== 单位背包 ==");
+                foreach (Item item in Items)
+                {
+                    builder.Append(item.ToString());
+                }
+            }
+            
+            /**
+             * 意义不明（✖）的代码
+             */
+            if (showGrowth == showEXP)
+            {
+                showGrowth.ToString();
+            }
+
+            return builder.ToString();
+        }
+    }
+}
diff --git a/Entity/System/Activity.cs b/Entity/System/Activity.cs
new file mode 100644
index 0000000..e471d17
--- /dev/null
+++ b/Entity/System/Activity.cs
@@ -0,0 +1,122 @@
+using System.Text;
+using Milimoe.FunGame.Core.Library.Common.Event;
+using Milimoe.FunGame.Core.Library.Constant;
+
+namespace Milimoe.FunGame.Core.Entity
+{
+    public class Activity(long id, string name, DateTime startTime, DateTime endTime)
+    {
+        public long Id { get; set; } = id;
+        public string Name { get; set; } = name;
+        public DateTime StartTime { get; set; } = startTime;
+        public DateTime EndTime { get; set; } = endTime;
+        public ActivityState Status { get; private set; } = ActivityState.Future;
+        public HashSet<Quest> Quests { get; set; } = [];
+
+        // 事件
+        public event Action<ActivityEventArgs>? UserAccess;
+        public event Action<ActivityEventArgs>? UserGetActivityInfo;
+
+        public void UnRegisterUserAccess()
+        {
+            UserAccess = null;
+        }
+
+        public void UnRegisterUserGetActivityInfo()
+        {
+            UserGetActivityInfo = null;
+        }
+
+        public void UpdateState()
+        {
+            ActivityState newState;
+            DateTime now = DateTime.Now;
+            DateTime upComingTime = StartTime.AddHours(-6);
+
+            if (now < upComingTime)
+            {
+                newState = ActivityState.Future;
+            }
+            else if (now >= upComingTime && now < StartTime)
+            {
+                newState = ActivityState.Upcoming;
+            }
+            else if (now >= StartTime && now < EndTime)
+            {
+                newState = ActivityState.InProgress;
+            }
+            else
+            {
+                newState = ActivityState.Ended;
+            }
+
+            if (Status != newState)
+            {
+                Status = newState;
+                foreach (Quest quest in Quests)
+                {
+                    if (newState == ActivityState.InProgress)
+                    {
+                        if (quest.Status == QuestState.NotStarted && quest.QuestType == QuestType.Progressive)
+                        {
+                            quest.Status = QuestState.InProgress;
+                        }
+                    }
+                    else if (newState == ActivityState.Ended)
+                    {
+                        if (quest.Status == QuestState.NotStarted || quest.Status == QuestState.InProgress)
+                        {
+                            quest.Status = QuestState.Missed;
+                        }
+                    }
+                }
+            }
+        }
+
+        public bool AllowUserAccess(long userId, long questId = 0)
+        {
+            UpdateState();
+            ActivityEventArgs args = new(userId, questId, this);
+            UserAccess?.Invoke(args);
+            return args.AllowAccess;
+        }
+
+        public void GetActivityInfo(long userId, long questId = 0)
+        {
+            UpdateState();
+            ActivityEventArgs args = new(userId, questId, this);
+            UserGetActivityInfo?.Invoke(args);
+        }
+
+        public string ToString(bool showQuests)
+        {
+            UpdateState();
+            StringBuilder builder = new();
+
+            builder.AppendLine($"☆--- [{Name}] ---☆");
+            string status = Status switch
+            {
+                ActivityState.Future => "预告中",
+                ActivityState.Upcoming => "即将开始",
+                ActivityState.InProgress => "进行中",
+                _ => "已结束"
+            };
+            builder.AppendLine($"活动状态：{status}");
+            builder.AppendLine($"开始时间：{StartTime.ToString(General.GeneralDateTimeFormatChinese)}");
+            builder.AppendLine($"结束时间：{EndTime.ToString(General.GeneralDateTimeFormatChinese)}");
+
+            if (showQuests && Quests.Count > 0)
+            {
+                builder.AppendLine("=== 任务列表 ===");
+                builder.AppendLine(string.Join("\r\n", Quests));
+            }
+
+            return builder.ToString().Trim();
+        }
+
+        public override string ToString()
+        {
+            return ToString(true);
+        }
+    }
+}
diff --git a/Entity/System/Quest.cs b/Entity/System/Quest.cs
index b754f56..1d225ac 100644
--- a/Entity/System/Quest.cs
+++ b/Entity/System/Quest.cs
@@ -13,7 +13,26 @@ namespace Milimoe.FunGame.Core.Entity
         public double MaterialsAward { get; set; } = 0;
         public HashSet<Item> Awards { get; set; } = [];
         public Dictionary<string, int> AwardsCount { get; set; } = [];
-        public string AwardsString { get; set; } = "";
+        public string AwardsString
+        {
+            get
+            {
+                List<string> awards = [];
+                if (CreditsAward > 0)
+                {
+                    awards.Add($"{General.GameplayEquilibriumConstant.InGameCurrency} * {CreditsAward}");
+                }
+                if (MaterialsAward > 0)
+                {
+                    awards.Add($"{General.GameplayEquilibriumConstant.InGameMaterial} * {MaterialsAward}");
+                }
+                foreach (Item item in Awards)
+                {
+                    awards.Add($"[{ItemSet.GetQualityTypeName(item.QualityType)}|{ItemSet.GetItemTypeName(item.ItemType)}] {item.Name} * {AwardsCount[item.Name]}");
+                }
+                return string.Join("，", awards);
+            }
+        }
         public DateTime? StartTime { get; set; } = null;
         public DateTime? SettleTime { get; set; } = null;
         public QuestType QuestType { get; set; } = QuestType.Continuous;
@@ -29,21 +48,6 @@ namespace Milimoe.FunGame.Core.Entity
                 progressString = $"\r\n当前进度：{Progress}/{MaxProgress}";
             }
 
-            List<string> awards = [];
-            if (CreditsAward > 0)
-            {
-                awards.Add($"{General.GameplayEquilibriumConstant.InGameCurrency} * {CreditsAward}");
-            }
-            if (MaterialsAward > 0)
-            {
-                awards.Add($"{General.GameplayEquilibriumConstant.InGameMaterial} * {MaterialsAward}");
-            }
-            foreach (Item item in Awards)
-            {
-                awards.Add($"[{ItemSet.GetQualityTypeName(item.QualityType)}|{ItemSet.GetItemTypeName(item.ItemType)}] {item.Name} * {AwardsCount[item.Name]}");
-            }
-            AwardsString = string.Join("，", awards);
-
             return $"{Id}. {Name}\r\n" +
                    $"{Description}\r\n" +
                    (QuestType == QuestType.Continuous ? $"需要时间：{EstimatedMinutes} 分钟\r\n" : "") +
@@ -53,24 +57,13 @@ namespace Milimoe.FunGame.Core.Entity
                        + "\r\n"
                    : "") +
                    $"完成奖励：{AwardsString}\r\n" +
-                   $"任务状态：{GetStatus()}" + progressString +
+                   $"任务状态：{CommonSet.GetQuestStatus(Status)}" + progressString +
                    (SettleTime.HasValue ? $"\r\n结算时间：{SettleTime.Value.ToString(General.GeneralDateTimeFormatChinese)}" : "");
         }
 
-        private string GetStatus()
-        {
-            return Status switch
-            {
-                QuestState.InProgress => "进行中",
-                QuestState.Completed => "已完成",
-                QuestState.Settled => "已结算",
-                _ => "未开始"
-            };
-        }
-
         public override bool Equals(IBaseEntity? other)
         {
-            return other is Quest && other.Id == Id;
+            return other is Quest && other.GetIdName() == GetIdName();
         }
     }
 }
diff --git a/Library/Common/Event/SendTalkEventArgs.cs b/Library/Common/Event/SendTalkEventArgs.cs
index 2aef9c0..7388751 100644
--- a/Library/Common/Event/SendTalkEventArgs.cs
+++ b/Library/Common/Event/SendTalkEventArgs.cs
@@ -1,12 +1,7 @@
 namespace Milimoe.FunGame.Core.Library.Common.Event
 {
-    public class SendTalkEventArgs : GeneralEventArgs
+    public class SendTalkEventArgs(string message = "") : GeneralEventArgs
     {
-        public string Message { get; set; } = "";
-
-        public SendTalkEventArgs(string message = "")
-        {
-            this.Message = message;
-        }
+        public string Message { get; set; } = message;
     }
 }
diff --git a/Library/Common/Event/UserActivityEventArgs.cs b/Library/Common/Event/UserActivityEventArgs.cs
index d8786a5..7f12986 100644
--- a/Library/Common/Event/UserActivityEventArgs.cs
+++ b/Library/Common/Event/UserActivityEventArgs.cs
@@ -1,13 +1,16 @@
-using Milimoe.FunGame.Core.Library.Constant;
+using Milimoe.FunGame.Core.Entity;
+using Milimoe.FunGame.Core.Library.Constant;
 
 namespace Milimoe.FunGame.Core.Library.Common.Event
 {
-    public class UserActivityEventArgs(long userId, ActivityState activityState, DateTime startTime, DateTime endTime) : GeneralEventArgs
+    public class ActivityEventArgs(long userId, long questId, Activity activity) : EventArgs
     {
         public long UserId { get; } = userId;
-        public ActivityState ActivityState { get; } = activityState;
-        public DateTime StartTime { get; } = startTime;
-        public DateTime EndTime { get; } = endTime;
+        public long QuestId { get; } = questId;
+        public Activity Activity { get; } = activity;
+        public ActivityState ActivityState { get; } = activity.Status;
+        public DateTime StartTime { get; } = activity.StartTime;
+        public DateTime EndTime { get; } = activity.EndTime;
         public bool AllowAccess { get; set; } = false;
     }
 }
diff --git a/Library/Constant/ConstantSet.cs b/Library/Constant/ConstantSet.cs
index 1e6dcb0..9c53918 100644
--- a/Library/Constant/ConstantSet.cs
+++ b/Library/Constant/ConstantSet.cs
@@ -18,6 +18,18 @@ namespace Milimoe.FunGame.Core.Library.Constant
                 _ => "I/"
             };
         }
+
+        public static string GetQuestStatus(QuestState status)
+        {
+            return status switch
+            {
+                QuestState.InProgress => "进行中",
+                QuestState.Completed => "已完成",
+                QuestState.Settled => "已结算",
+                QuestState.Missed => "未完成",
+                _ => "未开始"
+            };
+        }
     }
 
     /// <summary>
diff --git a/Library/Constant/StateEnum.cs b/Library/Constant/StateEnum.cs
index db67c8e..49094ad 100644
--- a/Library/Constant/StateEnum.cs
+++ b/Library/Constant/StateEnum.cs
@@ -92,7 +92,8 @@ namespace Milimoe.FunGame.Core.Library.Constant
         NotStarted,
         InProgress,
         Completed,
-        Settled
+        Settled,
+        Missed
     }
 
     public enum ActivityState
diff --git a/Model/EventCenter.cs b/Model/EventCenter.cs
new file mode 100644
index 0000000..b463ead
--- /dev/null
+++ b/Model/EventCenter.cs
@@ -0,0 +1,134 @@
+using Milimoe.FunGame.Core.Entity;
+using Milimoe.FunGame.Core.Library.Common.Event;
+
+namespace Milimoe.FunGame.Core.Model
+{
+    public class EventCenter
+    {
+        public static EventCenter Instance { get; } = new();
+
+        public Dictionary<string, HashSet<Activity>> Events { get; } = [];
+
+        public Dictionary<string, Store> Stores { get; set; } = [];
+
+        public HashSet<Activity> this[string name]
+        {
+            get
+            {
+                if (Events.TryGetValue(name, out HashSet<Activity>? activities) && activities != null)
+                {
+                    return activities;
+                }
+                return [];
+            }
+            set
+            {
+                AddOrUpdateEvent(name, value);
+            }
+        }
+
+        public Activity? GetActivity(string eventName, string activityName)
+        {
+            if (Events.TryGetValue(eventName, out HashSet<Activity>? activities) && activities != null && activities.FirstOrDefault(a => a.Name == activityName) is Activity activity)
+            {
+                return activity;
+            }
+            return null;
+        }
+
+        public void AddOrUpdateEvent(string name, IEnumerable<Activity> activities)
+        {
+            Events[name] = new(activities);
+        }
+
+        public bool RemoveEvent(string name)
+        {
+            return Events.Remove(name);
+        }
+
+        public Store? GetStore(string name)
+        {
+            if (Stores.TryGetValue(name, out Store? store))
+            {
+                return store;
+            }
+            return null;
+        }
+
+        public void AddOrUpdateStore(string name, Store store)
+        {
+            Stores[name] = store;
+        }
+
+        public bool RemoveStore(string name)
+        {
+            return Stores.Remove(name);
+        }
+
+        public bool AddActivity(string eventName, Activity activity)
+        {
+            if (Events.TryGetValue(eventName, out HashSet<Activity>? activities) && activities != null)
+            {
+                return activities.Add(activity);
+            }
+            else
+            {
+                Events[eventName] = [activity];
+            }
+            return false;
+        }
+
+        public bool RemoveActivity(string eventName, Activity activity)
+        {
+            if (Events.TryGetValue(eventName, out HashSet<Activity>? activities) && activities != null)
+            {
+                return activities.Remove(activity);
+            }
+            return false;
+        }
+
+        public void RegisterUserAccessEventHandler(string eventName, Action<ActivityEventArgs> handler)
+        {
+            if (Events.TryGetValue(eventName, out HashSet<Activity>? activities) && activities != null)
+            {
+                foreach (Activity activity in activities)
+                {
+                    activity.UserAccess += handler;
+                }
+            }
+        }
+
+        public void RegisterUserGetActivityInfoEventHandler(string eventName, Action<ActivityEventArgs> handler)
+        {
+            if (Events.TryGetValue(eventName, out HashSet<Activity>? activities) && activities != null)
+            {
+                foreach (Activity activity in activities)
+                {
+                    activity.UserGetActivityInfo += handler;
+                }
+            }
+        }
+
+        public void UnRegisterUserAccess(string eventName)
+        {
+            if (Events.TryGetValue(eventName, out HashSet<Activity>? activities) && activities != null)
+            {
+                foreach (Activity activity in activities)
+                {
+                    activity.UnRegisterUserAccess();
+                }
+            }
+        }
+
+        public void UnRegisterUserGetActivityInfo(string eventName)
+        {
+            if (Events.TryGetValue(eventName, out HashSet<Activity>? activities) && activities != null)
+            {
+                foreach (Activity activity in activities)
+                {
+                    activity.UnRegisterUserGetActivityInfo();
+                }
+            }
+        }
+    }
+}