diff --git a/lua/client/client.lua b/lua/client/client.lua
index f850ab04..d71a3303 100644
--- a/lua/client/client.lua
+++ b/lua/client/client.lua
@@ -83,7 +83,9 @@ function Client:moveCards(moves)
       table.insert(self.discard_pile, move.ids[1])
     end
 
-    Fk:filterCard(move.ids[1], move.to == Self.id and Self or nil)
+    if (move.ids[1] ~= -1) then
+      Fk:filterCard(move.ids[1], ClientInstance:getPlayerById(move.to))
+    end
   end
 end
 
diff --git a/lua/core/card.lua b/lua/core/card.lua
index 65ba0204..368edc08 100644
--- a/lua/core/card.lua
+++ b/lua/core/card.lua
@@ -86,6 +86,7 @@ end
 function Card:clone(suit, number)
   local newCard = self.class:new(self.name, suit, number)
   newCard.skill = self.skill
+  newCard.equip_skill = self.equip_skill
   return newCard
 end
 
diff --git a/lua/core/card_type/equip.lua b/lua/core/card_type/equip.lua
index 37db029e..ddfa2dd5 100644
--- a/lua/core/card_type/equip.lua
+++ b/lua/core/card_type/equip.lua
@@ -1,11 +1,27 @@
 ---@class EquipCard : Card
----@field equipSkill Skill
+---@field equip_skill Skill
 local EquipCard = Card:subclass("EquipCard")
 
 function EquipCard:initialize(name, suit, number)
   Card.initialize(self, name, suit, number)
   self.type = Card.TypeEquip
-  self.equipSkill = nil
+  self.equip_skill = nil
+end
+
+---@param room Room
+---@param player Player
+function EquipCard:onInstall(room, player)
+  if self.equip_skill then
+    room:handleAddLoseSkills(player, self.equip_skill.name, nil, false, true)
+  end
+end
+
+---@param room Room
+---@param player Player
+function EquipCard:onUninstall(room, player)
+  if self.equip_skill then
+    room:handleAddLoseSkills(player, "-" .. self.equip_skill.name, nil, false, true)
+  end
 end
 
 ---@class Weapon : EquipCard
diff --git a/lua/core/player.lua b/lua/core/player.lua
index 3a10f6ae..66c6932c 100644
--- a/lua/core/player.lua
+++ b/lua/core/player.lua
@@ -460,27 +460,10 @@ local function getActualSkill(skill)
   return skill
 end
 
----@param skill string | Skill
-function Player:hasEquipSkill(skill)
-  skill = getActualSkill(skill)
-  local equips = self.player_cards[Player.Equip]
-  for _, id in ipairs(equips) do
-    local card = Fk:getCardById(id)
-    if card.skill == skill then
-      return true
-    end
-  end
-  return false
-end
-
 ---@param skill string | Skill
 function Player:hasSkill(skill)
   skill = getActualSkill(skill)
 
-  if self:hasEquipSkill(skill) then
-    return true
-  end
-
   if table.contains(self.player_skills, skill) then
     return true
   end
diff --git a/lua/core/skill.lua b/lua/core/skill.lua
index 3e8120d4..5299c18f 100644
--- a/lua/core/skill.lua
+++ b/lua/core/skill.lua
@@ -6,6 +6,7 @@
 ---@field mute boolean
 ---@field anim_type string
 ---@field related_skills Skill[]
+---@field attached_equip string
 local Skill = class("Skill")
 
 ---@alias Frequency integer
@@ -32,6 +33,8 @@ function Skill:initialize(name, frequency)
   if string.sub(name, 1, 1) == "#" then
     self.visible = false
   end
+
+  self.attached_equip = nil
 end
 
 ---@param skill Skill
@@ -39,4 +42,9 @@ function Skill:addRelatedSkill(skill)
   table.insert(self.related_skills, skill)
 end
 
+---@return boolean
+function Skill:isEquipmentSkill()
+  return self.attached_equip and type(self.attached_equip) == 'string' and self.attached_equip ~= ""
+end
+
 return Skill
diff --git a/lua/fk_ex.lua b/lua/fk_ex.lua
index 3cf12c00..ae56fa56 100644
--- a/lua/fk_ex.lua
+++ b/lua/fk_ex.lua
@@ -90,15 +90,17 @@ function fk.CreateTriggerSkill(spec)
     skill.refresh = spec.on_refresh
   end
 
-  if not spec.priority then
-    if frequency == Skill.Wake then
-      spec.priority = 3
-    elseif frequency == Skill.Compulsory then
-      spec.priority = 2
-    else
-      spec.priority = 1
+  if spec.attached_equip then
+    assert(type(spec.attached_equip) == "string") 
+    skill.attached_equip = spec.attached_equip
+
+    if not spec.priority then
+      spec.priority = 0.1
     end
+  elseif not spec.priority then
+    spec.priority = 1
   end
+
   if type(spec.priority) == "number" then
     for _, event in ipairs(skill.events) do
       skill.priority_table[event] = spec.priority
@@ -137,6 +139,11 @@ function fk.CreateActiveSkill(spec)
   }
   skill.distance_limit = spec.distance_limit or skill.distance_limit
 
+  if spec.attached_equip then
+    assert(type(spec.attached_equip) == "string") 
+    skill.attached_equip = spec.attached_equip
+  end
+
   if spec.can_use then skill.canUse = spec.can_use end
   if spec.card_filter then skill.cardFilter = spec.card_filter end
   if spec.target_filter then skill.targetFilter = spec.target_filter end
@@ -173,6 +180,11 @@ function fk.CreateViewAsSkill(spec)
   }
   skill.distance_limit = spec.distance_limit or skill.distance_limit
 
+  if spec.attached_equip then
+    assert(type(spec.attached_equip) == "string") 
+    skill.attached_equip = spec.attached_equip
+  end
+
   skill.viewAs = spec.view_as
   if spec.card_filter then
     skill.cardFilter = spec.card_filter
@@ -205,6 +217,11 @@ function fk.CreateDistanceSkill(spec)
     skill.global = spec.global
   end
 
+  if spec.attached_equip then
+    assert(type(spec.attached_equip) == "string") 
+    skill.attached_equip = spec.attached_equip
+  end
+
   return skill
 end
 
@@ -223,6 +240,11 @@ function fk.CreateProhibitSkill(spec)
     skill.global = spec.global
   end
 
+  if spec.attached_equip then
+    assert(type(spec.attached_equip) == "string") 
+    skill.attached_equip = spec.attached_equip
+  end
+
   return skill
 end
 
@@ -241,6 +263,11 @@ function fk.CreateAttackRangeSkill(spec)
     skill.global = spec.global
   end
 
+  if spec.attached_equip then
+    assert(type(spec.attached_equip) == "string") 
+    skill.attached_equip = spec.attached_equip
+  end
+
   return skill
 end
 
@@ -265,6 +292,11 @@ function fk.CreateMaxCardsSkill(spec)
     skill.global = spec.global
   end
 
+  if spec.attached_equip then
+    assert(type(spec.attached_equip) == "string") 
+    skill.attached_equip = spec.attached_equip
+  end
+
   return skill
 end
 
@@ -292,6 +324,11 @@ function fk.CreateTargetModSkill(spec)
     skill.global = spec.global
   end
 
+  if spec.attached_equip then
+    assert(type(spec.attached_equip) == "string") 
+    skill.attached_equip = spec.attached_equip
+  end
+
   return skill
 end
 
@@ -382,6 +419,10 @@ function fk.CreateWeapon(spec)
 
   local card = Weapon:new(spec.name, spec.suit, spec.number, spec.attack_range)
   card.skill = spec.skill or defaultCardSkill
+  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
   return card
 end
 
@@ -396,6 +437,10 @@ function fk.CreateArmor(spec)
 
   local card = Armor:new(spec.name, spec.suit, spec.number)
   card.skill = spec.skill or defaultCardSkill
+  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
   return card
 end
 
@@ -410,6 +455,10 @@ function fk.CreateDefensiveRide(spec)
 
   local card = DefensiveRide:new(spec.name, spec.suit, spec.number)
   card.skill = spec.skill or defaultCardSkill
+  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
   return card
 end
 
@@ -424,6 +473,10 @@ function fk.CreateOffensiveRide(spec)
 
   local card = OffensiveRide:new(spec.name, spec.suit, spec.number)
   card.skill = spec.skill or defaultCardSkill
+  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
   return card
 end
 
@@ -438,5 +491,9 @@ function fk.CreateTreasure(spec)
 
   local card = Treasure:new(spec.name, spec.suit, spec.number)
   card.skill = spec.skill or defaultCardSkill
+  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
   return card
 end
diff --git a/lua/server/room.lua b/lua/server/room.lua
index b5e81dcf..e2e8c782 100644
--- a/lua/server/room.lua
+++ b/lua/server/room.lua
@@ -1660,6 +1660,19 @@ function Room:moveCards(...)
         end
         self:setCardArea(info.cardId, data.toArea, data.to)
         Fk:filterCard(info.cardId, self:getPlayerById(data.to))
+
+        local currentCard = Fk:getCardById(info.cardId)
+        if 
+          data.toArea == Player.Equip and
+          currentCard.type == Card.TypeEquip and
+          data.to ~= nil and
+          self:getPlayerById(data.to):isAlive() and
+          currentCard.equip_skill
+        then
+          currentCard:onInstall(self, self:getPlayerById(data.to))
+        elseif realFromArea == Player.Equip and currentCard.type == Card.TypeEquip and data.from ~= nil and currentCard.equip_skill then
+          currentCard:onUninstall(self, self:getPlayerById(data.from))
+        end
       end
     end
   end
@@ -2032,8 +2045,9 @@ end
 
 ---@param player ServerPlayer
 ---@param skill_names string[] | string
----@param source_skill string | Skill | nil
-function Room:handleAddLoseSkills(player, skill_names, source_skill, sendlog)
+---@param source_skill string | Skill | null
+---@param no_trigger boolean | null
+function Room:handleAddLoseSkills(player, skill_names, source_skill, sendlog, no_trigger)
   if type(skill_names) == "string" then
     skill_names = skill_names:split("|")
   end
@@ -2094,7 +2108,7 @@ function Room:handleAddLoseSkills(player, skill_names, source_skill, sendlog)
     end
   end
 
-  if #triggers > 0 then
+  if (not no_trigger) and #triggers > 0 then
     for i = 1, #triggers do
       local event = losts[i] and fk.EventLoseSkill or fk.EventAcquireSkill
       self.logic:trigger(event, player, triggers[i])
diff --git a/packages/standard_cards/init.lua b/packages/standard_cards/init.lua
index 43742318..f4751935 100644
--- a/packages/standard_cards/init.lua
+++ b/packages/standard_cards/init.lua
@@ -722,11 +722,24 @@ extension:addCards({
   indulgence:clone(Card.Heart, 6),
 })
 
+local crossbowSkill = fk.CreateTargetModSkill{
+  name = "#crossbow_skill",
+  attached_equip = "crossbow",
+  residue_func = function(self, player, skill, scope)
+    if player:hasSkill(self.name) and skill.name == "slash_skill"
+      and scope == Player.HistoryPhase then
+      return 999
+    end
+  end,
+}
+Fk:addSkill(crossbowSkill)
+
 local crossbow = fk.CreateWeapon{
   name = "crossbow",
   suit = Card.Club,
   number = 1,
   attack_range = 1,
+  equip_skill = crossbowSkill,
 }
 Fk:loadTranslationTable{
   ["crossbow"] = "诸葛连弩",
diff --git a/packages/test/init.lua b/packages/test/init.lua
index 4aab2c44..d72867de 100644
--- a/packages/test/init.lua
+++ b/packages/test/init.lua
@@ -1,22 +1,73 @@
 local fkp_extensions = require "packages.test.test"
 local extension = fkp_extensions[1]
 
+local cheat = fk.CreateActiveSkill{
+  name = "cheat",
+  anim_type = "drawcard",
+  can_use = function(self, player)
+    return true
+  end,
+  feasible = function(self, selected, selected_cards)
+    return #selected == 0 and #selected_cards == 0
+  end,
+  on_use = function(self, room, effect)
+    local from = room:getPlayerById(effect.from)
+    local cardTypeName = room:askForChoice(from, { 'BasicCard', 'TrickCard', 'Equip' }, "cheat")
+    local cardType = Card.TypeBasic
+    if cardTypeName == 'TrickCard' then
+      cardType = Card.TypeTrick
+    elseif cardTypeName == 'Equip' then
+      cardType = Card.TypeEquip
+    end
+
+    local allCardIds = Fk:getAllCardIds()
+    local allCardMapper = {}
+    local allCardNames = {}
+    for _, id in ipairs(allCardIds) do
+      local card = Fk:getCardById(id)
+      if card.type == cardType then
+        if allCardMapper[card.name] == nil then
+          table.insert(allCardNames, card.name)
+        end
+
+        allCardMapper[card.name] = allCardMapper[card.name] or {}
+        table.insert(allCardMapper[card.name], id)
+      end
+    end
+
+    if #allCardNames == 0 then
+      return
+    end
+
+    local cardName = room:askForChoice(from, allCardNames, "cheat")
+    local toGain = nil
+    if #allCardMapper[cardName] > 0 then
+      toGain = allCardMapper[cardName][math.random(1, #allCardMapper[cardName])]
+    end
+
+    room:obtainCard(effect.from, toGain, true, fk.ReasonPrey)
+  end
+}
 local test_filter = fk.CreateFilterSkill{
   name = "test_filter",
   card_filter = function(self, card)
-    return true
+    return card.number > 11
   end,
   view_as = function(self, card)
-    return Fk:cloneCard("ex_nihilo", card.suit, card.number)
+    return Fk:cloneCard("crossbow", card.suit, card.number)
   end,
 }
 local test2 = General(extension, "mouxusheng", "wu", 4)
 test2:addSkill(test_filter)
+test2:addSkill(cheat)
 
 Fk:loadTranslationTable{
   ["test"] = "测试",
   ["test_filter"] = "破军",
+  [":test_filter"] = "你的点数大于11的牌视为无中生有。",
   ["mouxusheng"] = "谋徐盛",
+  --["cheat"] = "开挂",
+  [":cheat"] = "出牌阶段，你可以获得一张想要的牌。",
 }
 
 return fkp_extensions
diff --git a/qml/Pages/RoomElement/CardArea.qml b/qml/Pages/RoomElement/CardArea.qml
index 00df3311..b005db80 100644
--- a/qml/Pages/RoomElement/CardArea.qml
+++ b/qml/Pages/RoomElement/CardArea.qml
@@ -24,6 +24,8 @@ Item {
     for (let i = 0; i < cards.length; i++) {
       for (let j = 0; j < outputs.length; j++) {
         if (outputs[j] === cards[i].cid) {
+          let state = JSON.parse(Backend.callLuaFunction("GetCardData", [cards[i].cid]));
+          cards[i].setData(state);
           result.push(cards[i]);
           cards.splice(i, 1);
           i--;
diff --git a/qml/Pages/RoomElement/CardItem.qml b/qml/Pages/RoomElement/CardItem.qml
index 19e74df0..970c029b 100644
--- a/qml/Pages/RoomElement/CardItem.qml
+++ b/qml/Pages/RoomElement/CardItem.qml
@@ -241,6 +241,8 @@ Item {
     suit = data.suit;
     number = data.number;
     color = data.color;
+    subtype = data.subtype ? data.subtype : "";
+    virt_name = data.virt_name ? data.virt_name : "";
   }
 
   function toData()
@@ -250,7 +252,9 @@ Item {
       name: name,
       suit: suit,
       number: number,
-      color: color
+      color: color,
+      subtype: subtype,
+      virt_name: virt_name,
     };
     return data;
   }
diff --git a/qml/Pages/RoomElement/PhotoElement/EquipItem.qml b/qml/Pages/RoomElement/PhotoElement/EquipItem.qml
index 748684f5..8c29787a 100644
--- a/qml/Pages/RoomElement/PhotoElement/EquipItem.qml
+++ b/qml/Pages/RoomElement/PhotoElement/EquipItem.qml
@@ -122,7 +122,11 @@ Item {
       icon = "horse";
     } else {
       text = Backend.translate(name);
-      icon = name;
+      if (card.virt_name) {
+        icon = card.virt_name;
+      } else {
+        icon = name;
+      }
     }
   }
 
diff --git a/qml/main.qml b/qml/main.qml
index 2a2c016f..451498d8 100644
--- a/qml/main.qml
+++ b/qml/main.qml
@@ -9,6 +9,8 @@ Window {
   visible: true
   width: 960
   height: 540
+  minimumWidth: 160
+  minimumHeight: 90
   property var callbacks: Logic.callbacks
 
 Item {
@@ -36,7 +38,8 @@ Item {
   StackView {
     id: mainStack
     visible: !mainWindow.busy
-    initialItem: OS !== "Web" ? init : webinit
+    // If error occurs during loading initialItem, the program will fall into "polish()" loop
+    // initialItem: OS !== "Web" ? init : webinit
     anchors.fill: parent
   }
 
@@ -151,7 +154,7 @@ Item {
     anchors.centerIn: parent
     width: Math.min(contentWidth + 24, realMainWin.width * 0.9)
     height: Math.min(contentHeight + 24, realMainWin.height * 0.9)
-    closePolicy: Popup.CloseOnEscape
+    closePolicy: Popup.CloseOnEscape | Popup.CloseOnPressOutside
     padding: 12
     contentItem: Text {
       text: errDialog.txt
@@ -197,6 +200,11 @@ Item {
   }
 
   Component.onCompleted: {
+    if (OS !== "Web") {
+      mainStack.push(init);
+    } else {
+      mainStack.push(webinit);
+    }
     if (OS !== "Android" && OS !== "Web") {
       width = config.winWidth;
       height = config.winHeight;
diff --git a/src/ui/qmlbackend.cpp b/src/ui/qmlbackend.cpp
index 4219a250..af9beedb 100644
--- a/src/ui/qmlbackend.cpp
+++ b/src/ui/qmlbackend.cpp
@@ -77,8 +77,8 @@ void QmlBackend::quitLobby()
 {
   if (ClientInstance)
     delete ClientInstance;
-  if (ServerInstance)
-    delete ServerInstance;
+  // if (ServerInstance)
+  //   delete ServerInstance;
 }
 
 void QmlBackend::emitNotifyUI(const QString &command, const QString &jsonData) {