diff --git a/image/photo/magatama/shield.png b/image/photo/magatama/shield.png
new file mode 100644
index 00000000..d68ef5ef
Binary files /dev/null and b/image/photo/magatama/shield.png differ
diff --git a/lua/client/client.lua b/lua/client/client.lua
index 1dfde8ab..d121f28f 100644
--- a/lua/client/client.lua
+++ b/lua/client/client.lua
@@ -82,7 +82,9 @@ function Client:moveCards(moves)
           table.remove(from.player_cards[Player.Hand])
         end
       else
-        from:removeCards(move.fromArea, move.ids, move.fromSpecialName)
+        if table.contains({ Player.Hand, Player.Equip, Player.Judge, Player.Special }, move.fromArea) then
+          from:removeCards(move.fromArea, move.ids, move.fromSpecialName)
+        end
       end
     elseif move.fromArea == Card.DiscardPile then
       table.removeOne(self.discard_pile, move.ids[1])
diff --git a/lua/client/client_util.lua b/lua/client/client_util.lua
index c3f699da..6c8d5f8e 100644
--- a/lua/client/client_util.lua
+++ b/lua/client/client_util.lua
@@ -14,7 +14,8 @@ function GetGeneralData(name)
     extension = general.package.extensionName,
     kingdom = general.kingdom,
     hp = general.hp,
-    maxHp = general.maxHp
+    maxHp = general.maxHp,
+    shield = general.shield,
   }
 end
 
@@ -168,28 +169,13 @@ function CanUseCard(card, player)
 
   player = ClientInstance:getPlayerById(player)
   local ret = c.skill:canUse(player, c)
-  if ret then
-    local status_skills = Fk:currentRoom().status_skills[ProhibitSkill] or {}
-    for _, skill in ipairs(status_skills) do
-      if skill:prohibitUse(player, c) then
-        ret = false
-        break
-      end
-    end
-  end
+  ret = ret and not player:prohibitUse(c)
   return json.encode(ret)
 end
 
 function CardProhibitedUse(cid)
   local c = Fk:getCardById(cid)
-  local ret = false
-  local status_skills = Fk:currentRoom().status_skills[ProhibitSkill] or {}
-  for _, skill in ipairs(status_skills) do
-    if skill:prohibitUse(Self, c) then
-      ret = true
-      break
-    end
-  end
+  local ret = Self:prohibitUse(c)
   return json.encode(ret)
 end
 
@@ -211,16 +197,7 @@ function CanUseCardToTarget(card, to_select, selected)
   end
 
   local ret = c.skill:targetFilter(to_select, selected, selected_cards, c)
-  if ret then
-    local r = Fk:currentRoom()
-    local status_skills = r.status_skills[ProhibitSkill] or {}
-    for _, skill in ipairs(status_skills) do
-      if skill:isProhibited(Self, r:getPlayerById(to_select), c) then
-        ret = false
-        break
-      end
-    end
-  end
+  ret = ret and not Self:isProhibited(Fk:currentRoom():getPlayerById(to_select), c)
   return json.encode(ret)
 end
 
@@ -403,14 +380,7 @@ end
 
 function CardProhibitedResponse(cid)
   local c = Fk:getCardById(cid)
-  local ret = false
-  local status_skills = Fk:currentRoom().status_skills[ProhibitSkill] or {}
-  for _, skill in ipairs(status_skills) do
-    if skill:prohibitResponse(Self, c) then
-      ret = true
-      break
-    end
-  end
+  local ret = Self:prohibitResponse(c)
   return json.encode(ret)
 end
 
@@ -453,12 +423,19 @@ end
 
 function GetInteractionOfSkill(skill_name)
   local skill = Fk.skills[skill_name]
-  return skill and json.encode(skill.interaction) or "null"
+  if skill and skill.interaction then
+    if type(skill.interaction) == "function" then
+      return json.encode(skill:interaction())
+    else
+      return json.encode(skill.interaction)
+    end
+  end
+  return "null"
 end
 
 function SetInteractionDataOfSkill(skill_name, data)
   local skill = Fk.skills[skill_name]
-  if skill and type(skill.interaction) == "table" then
+  if skill and skill.interaction then
     skill.interaction.data = json.decode(data)
   end
 end
diff --git a/lua/client/i18n/zh_CN.lua b/lua/client/i18n/zh_CN.lua
index 6ca8daa3..7ffa5887 100644
--- a/lua/client/i18n/zh_CN.lua
+++ b/lua/client/i18n/zh_CN.lua
@@ -171,6 +171,7 @@ Fk:loadTranslationTable{
   ["normal_damage"] = "无属性",
   ["fire_damage"] = "火属性",
   ["thunder_damage"] = "雷属性",
+  ["ice_damage"] = "冰属性",
 
   ["phase_judge"] = "判定阶段",
   ["phase_draw"] = "摸牌阶段",
diff --git a/lua/core/card.lua b/lua/core/card.lua
index 75ef8bc2..ff8b2422 100644
--- a/lua/core/card.lua
+++ b/lua/core/card.lua
@@ -20,6 +20,7 @@
 ---@field public skillNames string[]
 ---@field public skill Skill
 ---@field public special_skills string[] | nil
+---@field public is_damage_card boolean
 local Card = class("Card")
 
 ---@alias Suit integer
@@ -162,7 +163,7 @@ local function updateColorAndNumber(card)
     number = math.min(number + c.number, 13)
     if color ~= c.color then
       if not different_color then
-        if color ~= Card.NoColor then
+        if c.color ~= Card.NoColor then
           different_color = true
         end
         color = c.color
@@ -183,8 +184,16 @@ function Card:addSubcard(card)
     table.insert(self.subcards, card)
   else
     assert(card:isInstanceOf(Card))
-    assert(not card:isVirtual(), "Can not add virtual card as subcard")
-    table.insert(self.subcards, card.id)
+    -- assert(not card:isVirtual(), "Can not add virtual card as subcard")
+    if card:isVirtual() then
+      table.insertTable(self.subcards, card.subcards)
+    else
+      table.insert(self.subcards, card.id)
+    end
+
+    for _, skill in ipairs(card.skillNames) do
+      self.skillName = skill
+    end
   end
 
   updateColorAndNumber(self)
diff --git a/lua/core/general.lua b/lua/core/general.lua
index 8a53d449..ae98f342 100644
--- a/lua/core/general.lua
+++ b/lua/core/general.lua
@@ -13,6 +13,7 @@
 ---@field public kingdom string @ 武将所属势力
 ---@field public hp integer @ 武将初始体力
 ---@field public maxHp integer @ 武将初始最大体力
+---@field public shield integer @ 初始护甲
 ---@field public gender Gender @ 武将性别
 ---@field public skills Skill[] @ 武将技能
 ---@field public other_skills string[] @ 武将身上属于其他武将的技能，通过字符串调用
@@ -40,6 +41,7 @@ function General:initialize(package, name, kingdom, hp, maxHp, gender)
   self.hp = hp
   self.maxHp = maxHp or hp
   self.gender = gender or General.Male
+  self.shield = 0
 
   self.skills = {}    -- skills first added to this general
   self.other_skills = {}  -- skill belongs other general, e.g. "mashu" of pangde
diff --git a/lua/core/player.lua b/lua/core/player.lua
index e5c1b47e..027f0e14 100644
--- a/lua/core/player.lua
+++ b/lua/core/player.lua
@@ -10,6 +10,7 @@
 ---@field public id integer @ 玩家的id，每名玩家的id是唯一的。机器人的id是负数。
 ---@field public hp integer @ 体力值
 ---@field public maxHp integer @ 体力上限
+---@field public shield integer @ 护甲数
 ---@field public kingdom string @ 势力
 ---@field public role string @ 身份
 ---@field public general string @ 武将
@@ -667,4 +668,50 @@ function Player:getAllSkills()
   return ret
 end
 
+---@param to Player
+---@param card Card
+function Player:isProhibited(to, card)
+  local r = Fk:currentRoom()
+  local status_skills = r.status_skills[ProhibitSkill] or {}
+  for _, skill in ipairs(status_skills) do
+    if skill:isProhibited(self, to, card) then
+      return true
+    end
+  end
+  return false
+end
+
+---@param card Card
+function Player:prohibitUse(card)
+  local status_skills = Fk:currentRoom().status_skills[ProhibitSkill] or {}
+  for _, skill in ipairs(status_skills) do
+    if skill:prohibitUse(self, card) then
+      return true
+    end
+  end
+  return false
+end
+
+---@param card Card
+function Player:prohibitResponse(card)
+  local status_skills = Fk:currentRoom().status_skills[ProhibitSkill] or {}
+  for _, skill in ipairs(status_skills) do
+    if skill:prohibitResponse(self, card) then
+      return true
+    end
+  end
+  return false
+end
+
+---@param card Card
+function Player:prohibitDiscard(card)
+  local status_skills = Fk:currentRoom().status_skills[ProhibitSkill] or {}
+  for _, skill in ipairs(status_skills) do
+    if skill:prohibitDiscard(self, card) then
+      return true
+    end
+  end
+  return false
+end
+
 return Player
diff --git a/lua/core/util.lua b/lua/core/util.lua
index 541f53a0..2f0df7fd 100644
--- a/lua/core/util.lua
+++ b/lua/core/util.lua
@@ -1,5 +1,7 @@
 -- SPDX-License-Identifier: GPL-3.0-or-later
 
+local Util = {}
+
 -- the iterator of QList object
 local qlist_iterator = function(list, n)
   if n < list:length() - 1 then
@@ -52,9 +54,11 @@ function table:map(func)
 end
 
 -- frequenly used filter & map functions
-IdMapper = function(e) return e.id end
-Id2CardMapper = function(id) return Fk:getCardById(id) end
-Id2PlayerMapper = function(id) return Fk:currentRoom():getPlayerById(id) end
+Util.IdMapper = function(e) return e.id end
+Util.Id2CardMapper = function(id) return Fk:getCardById(id) end
+Util.Id2PlayerMapper = function(id)
+  return Fk:currentRoom():getPlayerById(id)
+end
 
 ---@generic T
 ---@param self T[]
@@ -467,4 +471,4 @@ function AimGroup:getCancelledTargets(aimGroup)
   return aimGroup[AimGroup.Cancelled]
 end
 
-return { TargetGroup, AimGroup }
+return { TargetGroup, AimGroup, Util }
diff --git a/lua/fk_ex.lua b/lua/fk_ex.lua
index d7f5cf95..82989e6d 100644
--- a/lua/fk_ex.lua
+++ b/lua/fk_ex.lua
@@ -345,6 +345,7 @@ end
 ---@class CardSpec: Card
 ---@field public skill Skill
 ---@field public equip_skill Skill
+---@field public is_damage_card boolean
 
 local defaultCardSkill = fk.CreateActiveSkill{
   name = "default_card_skill",
@@ -355,144 +356,105 @@ local defaultCardSkill = fk.CreateActiveSkill{
   end
 }
 
----@param spec CardSpec
----@return BasicCard
-function fk.CreateBasicCard(spec)
+local function preprocessCardSpec(spec)
   assert(type(spec.name) == "string" or type(spec.class_name) == "string")
   if not spec.name then spec.name = spec.class_name
   elseif not spec.class_name then spec.class_name = spec.name end
   if spec.suit then assert(type(spec.suit) == "number") end
   if spec.number then assert(type(spec.number) == "number") end
+end
 
-  local card = BasicCard:new(spec.name, spec.suit, spec.number)
+local function readCardSpecToCard(card, spec)
   card.skill = spec.skill or defaultCardSkill
   card.special_skills = spec.special_skills
+  card.is_damage_card = spec.is_damage_card
+end
+
+---@param spec CardSpec
+---@return BasicCard
+function fk.CreateBasicCard(spec)
+  preprocessCardSpec(spec)
+  local card = BasicCard:new(spec.name, spec.suit, spec.number)
+  readCardSpecToCard(card, spec)
   return card
 end
 
 ---@param spec CardSpec
 ---@return TrickCard
 function fk.CreateTrickCard(spec)
-  assert(type(spec.name) == "string" or type(spec.class_name) == "string")
-  if not spec.name then spec.name = spec.class_name
-  elseif not spec.class_name then spec.class_name = spec.name end
-  if spec.suit then assert(type(spec.suit) == "number") end
-  if spec.number then assert(type(spec.number) == "number") end
-
+  preprocessCardSpec(spec)
   local card = TrickCard:new(spec.name, spec.suit, spec.number)
-  card.skill = spec.skill or defaultCardSkill
-  card.special_skills = spec.special_skills
+  readCardSpecToCard(card, spec)
   return card
 end
 
 ---@param spec CardSpec
 ---@return DelayedTrickCard
 function fk.CreateDelayedTrickCard(spec)
-  assert(type(spec.name) == "string" or type(spec.class_name) == "string")
-  if not spec.name then spec.name = spec.class_name
-  elseif not spec.class_name then spec.class_name = spec.name end
-  if spec.suit then assert(type(spec.suit) == "number") end
-  if spec.number then assert(type(spec.number) == "number") end
-
+  preprocessCardSpec(spec)
   local card = DelayedTrickCard:new(spec.name, spec.suit, spec.number)
-  card.skill = spec.skill or defaultCardSkill
-  card.special_skills = spec.special_skills
+  readCardSpecToCard(card, spec)
   return card
 end
 
+local function readCardSpecToEquip(card, spec)
+  card.equip_skill = spec.equip_skill
+
+  if spec.on_install then card.onInstall = spec.on_install end
+  if spec.on_uninstall then card.onUninstall = spec.on_uninstall end
+end
+
 ---@param spec CardSpec
 ---@return Weapon
 function fk.CreateWeapon(spec)
-  assert(type(spec.name) == "string" or type(spec.class_name) == "string")
-  if not spec.name then spec.name = spec.class_name
-  elseif not spec.class_name then spec.class_name = spec.name end
-  if spec.suit then assert(type(spec.suit) == "number") end
-  if spec.number then assert(type(spec.number) == "number") end
-  if spec.attack_range then assert(type(spec.attack_range) == "number" and spec.attack_range >= 0) end
+  preprocessCardSpec(spec)
+  if spec.attack_range then
+    assert(type(spec.attack_range) == "number" and spec.attack_range >= 0)
+  end
 
   local card = Weapon:new(spec.name, spec.suit, spec.number, spec.attack_range)
-  card.skill = spec.skill or defaultCardSkill
-  card.special_skills = spec.special_skills
-  card.equip_skill = spec.equip_skill
-
-  if spec.on_install then card.onInstall = spec.on_install end
-  if spec.on_uninstall then card.onUninstall = spec.on_uninstall end
+  readCardSpecToCard(card, spec)
+  readCardSpecToEquip(card, spec)
   return card
 end
 
 ---@param spec CardSpec
 ---@return Armor
 function fk.CreateArmor(spec)
-  assert(type(spec.name) == "string" or type(spec.class_name) == "string")
-  if not spec.name then spec.name = spec.class_name
-  elseif not spec.class_name then spec.class_name = spec.name end
-  if spec.suit then assert(type(spec.suit) == "number") end
-  if spec.number then assert(type(spec.number) == "number") end
-
+  preprocessCardSpec(spec)
   local card = Armor:new(spec.name, spec.suit, spec.number)
-  card.skill = spec.skill or defaultCardSkill
-  card.equip_skill = spec.equip_skill
-  card.special_skills = spec.special_skills
-
-  if spec.on_install then card.onInstall = spec.on_install end
-  if spec.on_uninstall then card.onUninstall = spec.on_uninstall end
+  readCardSpecToCard(card, spec)
+  readCardSpecToEquip(card, spec)
   return card
 end
 
 ---@param spec CardSpec
 ---@return DefensiveRide
 function fk.CreateDefensiveRide(spec)
-  assert(type(spec.name) == "string" or type(spec.class_name) == "string")
-  if not spec.name then spec.name = spec.class_name
-  elseif not spec.class_name then spec.class_name = spec.name end
-  if spec.suit then assert(type(spec.suit) == "number") end
-  if spec.number then assert(type(spec.number) == "number") end
-
+  preprocessCardSpec(spec)
   local card = DefensiveRide:new(spec.name, spec.suit, spec.number)
-  card.skill = spec.skill or defaultCardSkill
-  card.special_skills = spec.special_skills
-  card.equip_skill = spec.equip_skill
-
-  if spec.on_install then card.onInstall = spec.on_install end
-  if spec.on_uninstall then card.onUninstall = spec.on_uninstall end
+  readCardSpecToCard(card, spec)
+  readCardSpecToEquip(card, spec)
   return card
 end
 
 ---@param spec CardSpec
 ---@return OffensiveRide
 function fk.CreateOffensiveRide(spec)
-  assert(type(spec.name) == "string" or type(spec.class_name) == "string")
-  if not spec.name then spec.name = spec.class_name
-  elseif not spec.class_name then spec.class_name = spec.name end
-  if spec.suit then assert(type(spec.suit) == "number") end
-  if spec.number then assert(type(spec.number) == "number") end
-
+  preprocessCardSpec(spec)
   local card = OffensiveRide:new(spec.name, spec.suit, spec.number)
-  card.skill = spec.skill or defaultCardSkill
-  card.special_skills = spec.special_skills
-  card.equip_skill = spec.equip_skill
-
-  if spec.on_install then card.onInstall = spec.on_install end
-  if spec.on_uninstall then card.onUninstall = spec.on_uninstall end
+  readCardSpecToCard(card, spec)
+  readCardSpecToEquip(card, spec)
   return card
 end
 
 ---@param spec CardSpec
 ---@return Treasure
 function fk.CreateTreasure(spec)
-  assert(type(spec.name) == "string" or type(spec.class_name) == "string")
-  if not spec.name then spec.name = spec.class_name
-  elseif not spec.class_name then spec.class_name = spec.name end
-  if spec.suit then assert(type(spec.suit) == "number") end
-  if spec.number then assert(type(spec.number) == "number") end
-
+  preprocessCardSpec(spec)
   local card = Treasure:new(spec.name, spec.suit, spec.number)
-  card.skill = spec.skill or defaultCardSkill
-  card.special_skills = spec.special_skills
-  card.equip_skill = spec.equip_skill
-
-  if spec.on_install then card.onInstall = spec.on_install end
-  if spec.on_uninstall then card.onUninstall = spec.on_uninstall end
+  readCardSpecToCard(card, spec)
+  readCardSpecToEquip(card, spec)
   return card
 end
 
diff --git a/lua/freekill.lua b/lua/freekill.lua
index 774303c6..f0800a54 100644
--- a/lua/freekill.lua
+++ b/lua/freekill.lua
@@ -17,8 +17,8 @@ json = require "json"
 math.randomseed(os.time())
 
 -- 加载实用类，让Lua编写起来更轻松。
-local GroupUtils = require "core.util"
-TargetGroup, AimGroup = table.unpack(GroupUtils)
+local Utils = require "core.util"
+TargetGroup, AimGroup, Util = table.unpack(Utils)
 dofile "lua/core/debug.lua"
 
 -- 加载游戏核心类
diff --git a/lua/server/events/hp.lua b/lua/server/events/hp.lua
index 1643fef3..5014e60c 100644
--- a/lua/server/events/hp.lua
+++ b/lua/server/events/hp.lua
@@ -1,5 +1,36 @@
 -- SPDX-License-Identifier: GPL-3.0-or-later
 
+local damage_nature_table = {
+  [fk.NormalDamage] = "normal_damage",
+  [fk.FireDamage] = "fire_damage",
+  [fk.ThunderDamage] = "thunder_damage",
+  [fk.IceDamage] = "ice_damage",
+}
+
+local function sendDamageLog(room, damageStruct)
+  if damageStruct.from then
+    room:sendLog{
+      type = "#Damage",
+      to = {damageStruct.from.id},
+      from = damageStruct.to.id,
+      arg = damageStruct.damage,
+      arg2 = damage_nature_table[damageStruct.damageType],
+    }
+  else
+    room:sendLog{
+      type = "#DamageWithNoFrom",
+      from = damageStruct.to.id,
+      arg = damageStruct.damage,
+      arg2 = damage_nature_table[damageStruct.damageType],
+    }
+  end
+  room:sendLogEvent("Damage", {
+    to = damageStruct.to.id,
+    damageType = damage_nature_table[damageStruct.damageType],
+    damageNum = damageStruct.damage,
+  })
+end
+
 GameEvent.functions[GameEvent.ChangeHp] = function(self)
   local player, num, reason, skillName, damageStruct = table.unpack(self.data)
   local self = self.room
@@ -25,32 +56,7 @@ GameEvent.functions[GameEvent.ChangeHp] = function(self)
   self:broadcastProperty(player, "hp")
 
   if reason == "damage" then
-    local damage_nature_table = {
-      [fk.NormalDamage] = "normal_damage",
-      [fk.FireDamage] = "fire_damage",
-      [fk.ThunderDamage] = "thunder_damage",
-    }
-    if damageStruct.from then
-      self:sendLog{
-        type = "#Damage",
-        to = {damageStruct.from.id},
-        from = player.id,
-        arg = 0 - num,
-        arg2 = damage_nature_table[damageStruct.damageType],
-      }
-    else
-      self:sendLog{
-        type = "#DamageWithNoFrom",
-        from = player.id,
-        arg = 0 - num,
-        arg2 = damage_nature_table[damageStruct.damageType],
-      }
-    end
-    self:sendLogEvent("Damage", {
-      to = player.id,
-      damageType = damage_nature_table[damageStruct.damageType],
-      damageNum = damageStruct.damage,
-    })
+    sendDamageLog(self, damageStruct)
   elseif reason == "loseHp" then
     self:sendLog{
       type = "#LoseHP",
@@ -125,8 +131,21 @@ GameEvent.functions[GameEvent.Damage] = function(self)
     return false
   end
 
-  if not self:changeHp(damageStruct.to, -damageStruct.damage, "damage", damageStruct.skillName, damageStruct) then
-    self.logic:breakEvent(false)
+  -- 先扣减护甲，再扣体力值
+  local shield_to_lose = math.min(damageStruct.damage, damageStruct.to.shield)
+  self:changeShield(damageStruct.to, -shield_to_lose)
+
+  if shield_to_lose < damageStruct.damage then
+    if not self:changeHp(
+      damageStruct.to,
+      shield_to_lose - damageStruct.damage,
+      "damage",
+      damageStruct.skillName,
+      damageStruct) then
+      self.logic:breakEvent(false)
+    end
+  else
+    sendDamageLog(self, damageStruct)
   end
 
   stages = {
diff --git a/lua/server/gamelogic.lua b/lua/server/gamelogic.lua
index ef34baba..d52717a4 100644
--- a/lua/server/gamelogic.lua
+++ b/lua/server/gamelogic.lua
@@ -122,6 +122,7 @@ function GameLogic:prepareForStart()
     local general = Fk.generals[p.general]
     p.maxHp = general.maxHp
     p.hp = general.hp
+    p.shield = general.shield
     -- TODO: setup AI here
 
     if p.role ~= "lord" then
@@ -132,6 +133,7 @@ function GameLogic:prepareForStart()
     end
     room:broadcastProperty(p, "maxHp")
     room:broadcastProperty(p, "hp")
+    room:broadcastProperty(p, "shield")
   end
 
   local allCardIds = Fk:getAllCardIds()
diff --git a/lua/server/room.lua b/lua/server/room.lua
index 01cd7b10..e10aeceb 100644
--- a/lua/server/room.lua
+++ b/lua/server/room.lua
@@ -1882,6 +1882,39 @@ function Room:responseCard(cardResponseEvent)
   return execGameEvent(GameEvent.RespondCard, cardResponseEvent)
 end
 
+---@param card_name string @ 想要视为使用的牌名
+---@param subcards integer[] @ 子卡，可以留空或者直接nil
+---@param from ServerPlayer @ 使用来源
+---@param tos ServerPlayer | ServerPlayer[] @ 目标角色（列表）
+---@param skillName string @ 技能名
+---@param extra boolean @ 是否计入次数
+function Room:useVirtualCard(card_name, subcards, from, tos, skillName, extra)
+  local card = Fk:cloneCard(card_name)
+  card.skillName = skillName
+
+  if from:prohibitUse(card) then return false end
+
+  if tos.class then tos = { tos } end
+  for i, p in ipairs(tos) do
+    if from:isProhibited(p, card) then
+      table.remove(tos, i)
+    end
+  end
+
+  if #tos == 0 then return false end
+
+  if subcards then card:addSubcards(Card:getIdList(subcards)) end
+
+  local use = {} ---@type CardUseStruct
+  use.from = from.id
+  use.tos = table.map(tos, function(p) return { p.id } end)
+  use.card = card
+  use.extraUse = extra
+  self:useCard(use)
+
+  return true
+end
+
 ------------------------------------------------------------------------
 -- 移动牌
 ------------------------------------------------------------------------
@@ -1992,6 +2025,16 @@ function Room:changeHp(player, num, reason, skillName, damageStruct)
   return execGameEvent(GameEvent.ChangeHp, player, num, reason, skillName, damageStruct)
 end
 
+--- 改变玩家的护甲数
+---@param player ServerPlayer
+---@param num integer @ 变化量
+function Room:changeShield(player, num)
+  if num == 0 then return end
+  player.shield = math.max(player.shield + num, 0)
+  player.shield = math.min(player.shield, 5)
+  self:broadcastProperty(player, "shield")
+end
+
 --- 令一名玩家失去体力。
 ---@param player ServerPlayer @ 玩家
 ---@param num integer @ 失去的数量
diff --git a/lua/server/serverplayer.lua b/lua/server/serverplayer.lua
index df1b7383..06e985d6 100644
--- a/lua/server/serverplayer.lua
+++ b/lua/server/serverplayer.lua
@@ -141,6 +141,7 @@ function ServerPlayer:marshal(player)
 
   room:notifyProperty(player, self, "maxHp")
   room:notifyProperty(player, self, "hp")
+  room:notifyProperty(player, self, "shield")
   room:notifyProperty(player, self, "gender")
   room:notifyProperty(player, self, "kingdom")
 
diff --git a/lua/server/system_enum.lua b/lua/server/system_enum.lua
index 2144fc84..bb648f9e 100644
--- a/lua/server/system_enum.lua
+++ b/lua/server/system_enum.lua
@@ -51,6 +51,7 @@
 fk.NormalDamage = 1
 fk.ThunderDamage = 2
 fk.FireDamage = 3
+fk.IceDamage = 4
 
 --- DamageStruct 用来描述和伤害事件有关的数据。
 ---@class DamageStruct
diff --git a/packages/maneuvering/init.lua b/packages/maneuvering/init.lua
index e9f8167d..0b51bf00 100644
--- a/packages/maneuvering/init.lua
+++ b/packages/maneuvering/init.lua
@@ -27,6 +27,7 @@ local thunderSlashSkill = fk.CreateActiveSkill{
 local thunderSlash = fk.CreateBasicCard{
   name = "thunder__slash",
   skill = thunderSlashSkill,
+  is_damage_card = true,
 }
 
 extension:addCards{
@@ -64,6 +65,7 @@ local fireSlashSkill = fk.CreateActiveSkill{
 local fireSlash = fk.CreateBasicCard{
   name = "fire__slash",
   skill = fireSlashSkill,
+  is_damage_card = true,
 }
 
 extension:addCards{
@@ -259,6 +261,7 @@ local fireAttackSkill = fk.CreateActiveSkill{
 local fireAttack = fk.CreateTrickCard{
   name = "fire_attack",
   skill = fireAttackSkill,
+  is_damage_card = true,
 }
 extension:addCards{
   fireAttack:clone(Card.Heart, 2),
diff --git a/packages/standard_cards/init.lua b/packages/standard_cards/init.lua
index 52e41b70..d8c91040 100644
--- a/packages/standard_cards/init.lua
+++ b/packages/standard_cards/init.lua
@@ -37,6 +37,7 @@ local slash = fk.CreateBasicCard{
   name = "slash",
   number = 7,
   suit = Card.Spade,
+  is_damage_card = true,
   skill = slashSkill,
 }
 
@@ -310,6 +311,7 @@ local duel = fk.CreateTrickCard{
   name = "duel",
   suit = Card.Spade,
   number = 1,
+  is_damage_card = true,
   skill = duelSkill,
 }
 
@@ -452,6 +454,7 @@ local savageAssault = fk.CreateTrickCard{
   name = "savage_assault",
   suit = Card.Spade,
   number = 7,
+  is_damage_card = true,
   skill = savageAssaultSkill,
 }
 
@@ -499,6 +502,7 @@ local archeryAttack = fk.CreateTrickCard{
   name = "archery_attack",
   suit = Card.Heart,
   number = 1,
+  is_damage_card = true,
   skill = archeryAttackSkill,
 }
 
diff --git a/packages/test/init.lua b/packages/test/init.lua
index c533ad2a..7dce5589 100644
--- a/packages/test/init.lua
+++ b/packages/test/init.lua
@@ -63,11 +63,11 @@ local test_active = fk.CreateActiveSkill{
     return true
   end,
   card_filter = function(self, card)
-    if self.interaction.data == "joy" then
+    -- if self.interaction.data == "joy" then
       --local c = Fk:getCardById(card)
       --return Self:getPileNameOfId(card) == self.name and c.color == Card.Red
       return true
-    end
+    -- end
   end,
   card_num = 2,
   target_filter = function() return true end,
@@ -86,11 +86,12 @@ local test_active = fk.CreateActiveSkill{
     -- room:takeAG(from, id)
     -- room:delay(2000)
     -- room:closeAG(from)
-    local cards = room:askForCardsChosen(from, from, 2, 3, "hej", "")
-    from:addToPile(self.name, cards)
-    from.kingdom = "wei"
-    room:broadcastProperty(from, "kingdom")
+    -- local cards = room:askForCardsChosen(from, from, 2, 3, "hej", "")
+    -- from:addToPile(self.name, cards)
+    -- from.kingdom = "wei"
+    -- room:broadcastProperty(from, "kingdom")
     -- p(cards)
+    room:useVirtualCard("slash", nil, from, room:getOtherPlayers(from), self.name, true)
   end,
 }
 local test_vs = fk.CreateViewAsSkill{
@@ -98,16 +99,18 @@ local test_vs = fk.CreateViewAsSkill{
   card_filter = function(self, to_select, selected)
     return #selected == 0
   end,
-  interaction = UI.ComboBox {
-    choices = {
-      "ex_nihilo",
-      "duel",
-      "snatch",
-      "dismantlement",
-      "savage_assault",
-      "archery_attack",
+  interaction = function(self)
+    return UI.ComboBox {
+      choices = {
+        "ex_nihilo",
+        "duel",
+        "snatch",
+        "dismantlement",
+        "savage_assault",
+        "archery_attack",
+      }
     }
-  },
+  end,
   view_as = function(self, cards)
     if #cards ~= 1 then
       return nil
@@ -120,6 +123,7 @@ local test_vs = fk.CreateViewAsSkill{
   end,
 }
 local test2 = General(extension, "mouxusheng", "wu", 4, 4, General.Female)
+test2.shield = 4
 test2:addSkill("rende")
 test2:addSkill(cheat)
 test2:addSkill(test_active)
diff --git a/qml/Pages/Room.qml b/qml/Pages/Room.qml
index cb1c6b34..cd45c9a5 100644
--- a/qml/Pages/Room.qml
+++ b/qml/Pages/Room.qml
@@ -192,6 +192,7 @@ Item {
         netstate: model.netstate
         maxHp: model.maxHp
         hp: model.hp
+        shield: model.shield
         seatNumber: model.seatNumber
         dead: model.dead
         dying: model.dying
@@ -256,6 +257,7 @@ Item {
     self.kingdom: dashboardModel.kingdom
     self.netstate: dashboardModel.netstate
     self.maxHp: dashboardModel.maxHp
+    self.shield: dashboardModel.shield
     self.hp: dashboardModel.hp
     self.seatNumber: dashboardModel.seatNumber
     self.dead: dashboardModel.dead
@@ -785,6 +787,7 @@ Item {
       netstate: "online",
       maxHp: 0,
       hp: 0,
+      shield: 0,
       seatNumber: 1,
       dead: false,
       dying: false,
@@ -808,6 +811,7 @@ Item {
         netstate: "online",
         maxHp: 0,
         hp: 0,
+        shield: 0,
         seatNumber: i + 1,
         dead: false,
         dying: false,
diff --git a/qml/Pages/RoomElement/GeneralCardItem.qml b/qml/Pages/RoomElement/GeneralCardItem.qml
index 6c493c37..b0f64d7b 100644
--- a/qml/Pages/RoomElement/GeneralCardItem.qml
+++ b/qml/Pages/RoomElement/GeneralCardItem.qml
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 import QtQuick
+import "PhotoElement"
 import "../skin-bank.js" as SkinBank
 
 /* Layout of general card:
@@ -18,6 +19,7 @@ CardItem {
   property string kingdom
   property int hp
   property int maxHp
+  property int shieldNum
   property string pkgName: ""
   name: ""
   // description: Sanguosha.getGeneralDescription(name)
@@ -40,6 +42,7 @@ CardItem {
     y: 4
     spacing: 1
     Repeater {
+      id: hpRepeater
       model: (hp > 5 || hp !== maxHp) ? 1 : hp
       Image {
         source: SkinBank.getGeneralCardDir(kingdom) + kingdom + "-magatama"
@@ -56,6 +59,14 @@ CardItem {
     }
   }
 
+  Shield {
+    anchors.right: parent.right
+    anchors.top: parent.top
+    anchors.topMargin: hpRepeater.model > 4 ? 16 : 0
+    scale: 0.8
+    value: shieldNum
+  }
+
   Text {
     width: 20
     height: 80
@@ -114,6 +125,7 @@ CardItem {
     kingdom = data.kingdom;
     hp = data.hp;
     maxHp = data.maxHp;
+    shieldNum = data.shield;
 
     let splited = name.split("__");
     if (splited.length > 1) {
diff --git a/qml/Pages/RoomElement/Photo.qml b/qml/Pages/RoomElement/Photo.qml
index 782ca637..f44cd12a 100644
--- a/qml/Pages/RoomElement/Photo.qml
+++ b/qml/Pages/RoomElement/Photo.qml
@@ -20,6 +20,7 @@ Item {
   property alias handcards: handcardAreaItem.length
   property int maxHp: 0
   property int hp: 0
+  property int shield: 0
   property int seatNumber: 1
   property bool dead: false
   property bool dying: false
@@ -150,6 +151,7 @@ Item {
     x: 8
     value: root.hp
     maxValue: root.maxHp
+    shieldNum: root.shield
     anchors.bottom: parent.bottom
     anchors.bottomMargin: 36
   }
diff --git a/qml/Pages/RoomElement/PhotoElement/HpBar.qml b/qml/Pages/RoomElement/PhotoElement/HpBar.qml
index 1a9ec896..e011ea02 100644
--- a/qml/Pages/RoomElement/PhotoElement/HpBar.qml
+++ b/qml/Pages/RoomElement/PhotoElement/HpBar.qml
@@ -2,23 +2,31 @@
 
 import QtQuick
 import ".."
+import "../../skin-bank.js" as SkinBank
 
 Column {
   id: root
   property int maxValue: 4
   property int value: 4
   property var colors: ["#F4180E", "#F4180E", "#E3B006", "#25EC27"]
+  property int shieldNum: 0
+
+  Shield {
+    id: shield
+    value: shieldNum
+  }
 
   Repeater {
     id: repeater
-    model: maxValue <= 4 ? maxValue : 0
+    model: column.visible ? 0 : maxValue
     Magatama {
       state: (maxValue - 1 - index) >= value ? 0 : (value >= 3 || value >= maxValue ? 3 : (value <= 0 ? 0 : value))
     }
   }
 
   Column {
-    visible: maxValue > 4
+    id: column
+    visible: maxValue > 4 || value > maxValue || (shieldNum > 0 && maxValue > 3)
     spacing: -4
 
     Magatama {
@@ -43,11 +51,15 @@ Column {
 
     GlowText {
       id: splitter
+      height: 12
       width: root.width
       text: "/"
       z: -10
+      rotation: 40
       color: hpItem.color
-      font: hpItem.font
+      font.family: fontLibian.name
+      font.pixelSize: 14
+      font.bold: true
       horizontalAlignment: hpItem.horizontalAlignment
 
       glow.color: hpItem.glow.color
diff --git a/qml/Pages/RoomElement/PhotoElement/Shield.qml b/qml/Pages/RoomElement/PhotoElement/Shield.qml
new file mode 100644
index 00000000..75c2c8c3
--- /dev/null
+++ b/qml/Pages/RoomElement/PhotoElement/Shield.qml
@@ -0,0 +1,22 @@
+import QtQuick
+import "../../skin-bank.js" as SkinBank
+
+Image {
+  id: root
+  property int value: 0
+  width: 20
+  height: 21
+  visible: (value > 0)
+  source: SkinBank.MAGATAMA_DIR + "shield"
+
+  Text {
+    text: value
+    anchors.horizontalCenter: parent.horizontalCenter
+    y: -2
+    font.family: fontLibian.name
+    font.pixelSize: 20
+    font.bold: true
+    color: "white"
+    style: Text.Outline
+  }
+}