diff --git a/lua/client/client.lua b/lua/client/client.lua
index ec28608a..04bc50a3 100644
--- a/lua/client/client.lua
+++ b/lua/client/client.lua
@@ -4,6 +4,7 @@
 ---@field alive_players ClientPlayer[]
 ---@field current ClientPlayer
 ---@field discard_pile integer[]
+---@field status_skills Skill[]
 Client = class('Client')
 
 -- load client classes
@@ -28,6 +29,10 @@ function Client:initialize()
   self.players = {}     -- ClientPlayer[]
   self.alive_players = {}
   self.discard_pile = {}
+  self.status_skills = {}
+  for class, skills in pairs(Fk.global_status_skill) do
+    self.status_skills[class] = {table.unpack(skills)}
+  end
 end
 
 ---@param id integer
diff --git a/lua/client/clientplayer.lua b/lua/client/clientplayer.lua
index 9372187b..b39d23a9 100644
--- a/lua/client/clientplayer.lua
+++ b/lua/client/clientplayer.lua
@@ -12,19 +12,4 @@ function ClientPlayer:initialize(cp)
   self.global_known_cards = {}  -- card that visible to all players
 end
 
----@param skill Skill
-function ClientPlayer:hasSkill(skill)
-  return table.contains(self.player_skills, skill)
-end
-
----@param skill Skill
-function ClientPlayer:addSkill(skill)
-  table.insert(self.player_skills, skill)
-end
-
----@param skill Skill
-function ClientPlayer:loseSkill(skill)
-  table.removeOne(self.player_skills, skill)
-end
-
 return ClientPlayer
diff --git a/lua/core/engine.lua b/lua/core/engine.lua
index ae828b9b..6164939a 100644
--- a/lua/core/engine.lua
+++ b/lua/core/engine.lua
@@ -4,6 +4,7 @@
 ---@field skills table<string, Skill>
 ---@field related_skills table<string, Skill[]>
 ---@field global_trigger TriggerSkill[]
+---@field global_status_skill table<class, Skill[]>
 ---@field generals table<string, General>
 ---@field lords string[]
 ---@field cards Card[]
@@ -24,6 +25,7 @@ function Engine:initialize()
   self.skills = {}    -- name --> Skill
   self.related_skills = {} -- skillName --> relatedSkill[]
   self.global_trigger = {}
+  self.global_status_skill = {}
   self.generals = {}    -- name --> General
   self.lords = {}     -- lordName[]
   self.cards = {}     -- Card[]
@@ -97,6 +99,16 @@ function Engine:addSkill(skill)
     error(string.format("Duplicate skill %s detected", skill.name))
   end
   self.skills[skill.name] = skill
+
+  if skill.global then
+    if skill:isInstanceOf(TriggerSkill) then
+      table.insert(self.global_trigger, skill)
+    else
+      local t = self.global_status_skill
+      t[skill.class] = t[skill.class] or {}
+      table.insert(t[skill.class], skill)
+    end
+  end
 end
 
 ---@param skills Skill[]
diff --git a/lua/core/general.lua b/lua/core/general.lua
index dd06d163..3d5db293 100644
--- a/lua/core/general.lua
+++ b/lua/core/general.lua
@@ -24,6 +24,8 @@ function General:initialize(package, name, kingdom, hp, maxHp, gender)
 
   self.skills = {}    -- skills first added to this general
   self.other_skills = {}  -- skill belongs other general, e.g. "mashu" of pangde
+
+  package:addGeneral(self)
 end
 
 ---@param skill Skill
diff --git a/lua/core/package.lua b/lua/core/package.lua
index b5180a0a..b9a54dd8 100644
--- a/lua/core/package.lua
+++ b/lua/core/package.lua
@@ -41,7 +41,7 @@ end
 ---@param general General
 function Package:addGeneral(general)
   assert(general.class and general:isInstanceOf(General))
-  table.insert(self.generals, general)
+  table.insertIfNeed(self.generals, general)
 end
 
 ---@param card Card
diff --git a/lua/core/player.lua b/lua/core/player.lua
index e6366a3c..f4162c3b 100644
--- a/lua/core/player.lua
+++ b/lua/core/player.lua
@@ -22,6 +22,7 @@
 ---@field player_cards table<integer, integer[]>
 ---@field special_cards table<string, integer[]>
 ---@field cardUsedHistory table<string, integer>
+---@field fixedDistance table<Player, integer>
 local Player = class("Player")
 
 ---@alias Phase integer
@@ -72,6 +73,7 @@ function Player:initialize()
   self.special_cards = {}
 
   self.cardUsedHistory = {}
+  self.fixedDistance = {}
 end
 
 ---@param general General
@@ -226,6 +228,17 @@ function Player:getAttackRange()
   return math.max(baseAttackRange, 0)
 end
 
+---@param other Player
+---@param num integer
+function Player:setFixedDistance(other, num)
+  self.fixedDistance[other] = num
+end
+
+---@param other Player
+function Player:removeFixedDistance(other)
+  self.fixedDistance[other] = nil
+end
+
 ---@param other Player
 function Player:distanceTo(other)
   assert(other:isInstanceOf(Player))
@@ -239,7 +252,17 @@ function Player:distanceTo(other)
   end
   local left = #Fk:currentRoom().alive_players - right
   local ret = math.min(left, right)
-  -- TODO: corrent distance here using skills
+
+  local status_skills = Fk:currentRoom().status_skills[DistanceSkill] or {}
+  for _, skill in ipairs(status_skills) do
+    local correct = skill:getCorrect(self, other)
+    ret = ret + correct
+  end
+  
+  if self.fixedDistance[other] then
+    ret = self.fixedDistance[other]
+  end
+
   return math.max(ret, 1)
 end
 
@@ -334,12 +357,21 @@ end
 function Player:addSkill(skill, source_skill)
   skill = getActualSkill(skill)
 
-  local toget = table.clone(skill.related_skills)
+  local toget = {table.unpack(skill.related_skills)}
   table.insert(toget, skill)
+
+  local room = Fk:currentRoom()
   local ret = {}
   for _, s in ipairs(toget) do
     if not self:hasSkill(s) then
       table.insert(ret, s)
+      if skill:isInstanceOf(TriggerSkill) and RoomInstance then
+        room.logic:addTriggerSkill(skill)
+      end
+      if table.contains(StatusSkills, skill.class) then
+        room.status_skills[skill.class] = room.status_skills[skill.class] or {}
+        table.insertIfNeed(room.status_skills[skill.class], skill)
+      end
     end
   end
 
diff --git a/lua/core/skill_type/distance.lua b/lua/core/skill_type/distance.lua
index e69de29b..b6b82a3e 100644
--- a/lua/core/skill_type/distance.lua
+++ b/lua/core/skill_type/distance.lua
@@ -0,0 +1,18 @@
+---@class DistanceSkill : Skill
+---@field global boolean
+local DistanceSkill = Skill:subclass("DistanceSkill")
+
+function DistanceSkill:initialize(name)
+  Skill.initialize(self, name, Skill.NotFrequent)
+
+  self.global = false
+end
+
+---@param from Player
+---@param to Player
+---@return integer
+function DistanceSkill:getCorrect(from, to)
+  return 0
+end
+
+return DistanceSkill
diff --git a/lua/core/util.lua b/lua/core/util.lua
index 16049c85..b28c23d4 100644
--- a/lua/core/util.lua
+++ b/lua/core/util.lua
@@ -10,7 +10,7 @@ function fk.qlist(list)
 end
 
 function table:contains(element)
-  if #self == 0 or type(self[1]) ~= type(element) then return false end
+  if #self == 0 then return false end
   for _, e in ipairs(self) do
     if e == element then return true end
   end
diff --git a/lua/fk_ex.lua b/lua/fk_ex.lua
index 27c4e669..9a736110 100644
--- a/lua/fk_ex.lua
+++ b/lua/fk_ex.lua
@@ -4,6 +4,10 @@ dofile "lua/server/event.lua"
 dofile "lua/server/system_enum.lua"
 TriggerSkill = require "core.skill_type.trigger"
 ActiveSkill = require "core.skill_type.active_skill"
+DistanceSkill = require "core.skill_type.distance"
+StatusSkills = {
+  DistanceSkill,
+}
 
 BasicCard = require "core.card_type.basic"
 local Trick = require "core.card_type.trick"
@@ -107,6 +111,25 @@ function fk.CreateActiveSkill(spec)
   return skill
 end
 
+---@class DistanceSpec: SkillSpec
+---@field correct_func fun(self: DistanceSkill, from: Player, to: Player)
+---@field global boolean
+
+---@param spec DistanceSpec
+---@return DistanceSkill
+function fk.CreateDistanceSkill(spec)
+  assert(type(spec.name) == "string")
+  assert(type(spec.correct_func) == "function")
+
+  local skill = DistanceSkill:new(spec.name)
+  skill.getCorrect = spec.correct_func
+  if spec.global then
+    skill.global = spec.global
+  end
+
+  return skill
+end
+
 ---@class CardSpec: Card
 ---@field skill Skill
 
diff --git a/lua/server/gamelogic.lua b/lua/server/gamelogic.lua
index 76baab26..8f58b48e 100644
--- a/lua/server/gamelogic.lua
+++ b/lua/server/gamelogic.lua
@@ -135,7 +135,7 @@ function GameLogic:prepareForStart()
   end
 
   for _, p in ipairs(room.alive_players) do
-    room:handleAddLoseSkills(p, "zhiheng", nil, false)
+    room:handleAddLoseSkills(p, "zhiheng|mashu", nil, false)
   end
 
   self:addTriggerSkill(GameRule)
diff --git a/lua/server/room.lua b/lua/server/room.lua
index 7efec8ad..57a1f103 100644
--- a/lua/server/room.lua
+++ b/lua/server/room.lua
@@ -12,6 +12,7 @@
 ---@field void integer[]
 ---@field card_place table<integer, CardArea>
 ---@field owner_map table<integer, integer>
+---@field status_skills Skill[]
 local Room = class("Room")
 
 -- load classes used by the game
@@ -71,6 +72,10 @@ function Room:initialize(_room)
   self.void = {}
   self.card_place = {}
   self.owner_map = {}
+  self.status_skills = {}
+  for class, skills in pairs(Fk.global_status_skill) do
+    self.status_skills[class] = {table.unpack(skills)}
+  end
 end
 
 -- When this function returns, the Room(C++) thread stopped.
diff --git a/packages/standard/init.lua b/packages/standard/init.lua
index 1d14b2b6..660aba96 100644
--- a/packages/standard/init.lua
+++ b/packages/standard/init.lua
@@ -12,85 +12,81 @@ Fk:loadTranslationTable{
 }
 
 local caocao = General:new(extension, "caocao", "wei", 4)
-extension:addGeneral(caocao)
 Fk:loadTranslationTable{
   ["caocao"] = "曹操",
 }
 
 local simayi = General:new(extension, "simayi", "wei", 3)
-extension:addGeneral(simayi)
 Fk:loadTranslationTable{
   ["simayi"] = "司马懿",
 }
 
 local xiahoudun = General:new(extension, "xiahoudun", "wei", 4)
-extension:addGeneral(xiahoudun)
 Fk:loadTranslationTable{
   ["xiahoudun"] = "夏侯惇",
 }
 
 local zhangliao = General:new(extension, "zhangliao", "wei", 4)
-extension:addGeneral(zhangliao)
 Fk:loadTranslationTable{
   ["zhangliao"] = "张辽",
 }
 
 local xuchu = General:new(extension, "xuchu", "wei", 4)
-extension:addGeneral(xuchu)
 Fk:loadTranslationTable{
   ["xuchu"] = "许褚",
 }
 
 local guojia = General:new(extension, "guojia", "wei", 3)
-extension:addGeneral(guojia)
 Fk:loadTranslationTable{
   ["guojia"] = "郭嘉",
 }
 
 local zhenji = General:new(extension, "zhenji", "wei", 3)
-extension:addGeneral(zhenji)
 Fk:loadTranslationTable{
   ["zhenji"] = "甄姬",
 }
 
 local liubei = General:new(extension, "liubei", "shu", 4)
-extension:addGeneral(liubei)
 Fk:loadTranslationTable{
   ["liubei"] = "刘备",
 }
 
 local guanyu = General:new(extension, "guanyu", "shu", 4)
-extension:addGeneral(guanyu)
 Fk:loadTranslationTable{
   ["guanyu"] = "关羽",
 }
 
 local zhangfei = General:new(extension, "zhangfei", "shu", 4)
-extension:addGeneral(zhangfei)
 Fk:loadTranslationTable{
   ["zhangfei"] = "张飞",
 }
 
 local zhugeliang = General:new(extension, "zhugeliang", "shu", 3)
-extension:addGeneral(zhugeliang)
 Fk:loadTranslationTable{
   ["zhugeliang"] = "诸葛亮",
 }
 
 local zhaoyun = General:new(extension, "zhaoyun", "shu", 4)
-extension:addGeneral(zhaoyun)
 Fk:loadTranslationTable{
   ["zhaoyun"] = "赵云",
 }
 
+local mashu = fk.CreateDistanceSkill{
+  name = "mashu",
+  correct_func = function(self, from, to)
+    if from:hasSkill(self.name) then
+      return -1
+    end
+  end,
+}
 local machao = General:new(extension, "machao", "shu", 4)
-extension:addGeneral(machao)
+machao:addSkill(mashu)
 Fk:loadTranslationTable{
   ["machao"] = "马超",
+  ["mashu"] = "马术",
 }
 
 local huangyueying = General:new(extension, "huangyueying", "shu", 3)
-extension:addGeneral(huangyueying)
 Fk:loadTranslationTable{
   ["huangyueying"] = "黄月英",
 }
@@ -108,68 +104,57 @@ local zhiheng = fk.CreateActiveSkill{
 }
 local sunquan = General:new(extension, "sunquan", "wu", 4)
 sunquan:addSkill(zhiheng)
-extension:addGeneral(sunquan)
 Fk:loadTranslationTable{
   ["sunquan"] = "孙权",
   ["zhiheng"] = "制衡",
 }
 
 local ganning = General:new(extension, "ganning", "wu", 4)
-extension:addGeneral(ganning)
 Fk:loadTranslationTable{
   ["ganning"] = "甘宁",
 }
 
 local lvmeng = General:new(extension, "lvmeng", "wu", 4)
-extension:addGeneral(lvmeng)
 Fk:loadTranslationTable{
   ["lvmeng"] = "吕蒙",
 }
 
 local huanggai = General:new(extension, "huanggai", "wu", 4)
-extension:addGeneral(huanggai)
 Fk:loadTranslationTable{
   ["huanggai"] = "黄盖",
 }
 
 local zhouyu = General:new(extension, "zhouyu", "wu", 3)
-extension:addGeneral(zhouyu)
 Fk:loadTranslationTable{
   ["zhouyu"] = "周瑜",
 }
 
 local daqiao = General:new(extension, "daqiao", "wu", 3)
-extension:addGeneral(daqiao)
 Fk:loadTranslationTable{
   ["daqiao"] = "大乔",
 }
 
 local luxun = General:new(extension, "luxun", "wu", 3)
-extension:addGeneral(luxun)
 Fk:loadTranslationTable{
   ["luxun"] = "陆逊",
 }
 
 local sunshangxiang = General:new(extension, "sunshangxiang", "wu", 3)
-extension:addGeneral(sunshangxiang)
 Fk:loadTranslationTable{
   ["sunshangxiang"] = "孙尚香",
 }
 
 local huatuo = General:new(extension, "huatuo", "qun", 3)
-extension:addGeneral(huatuo)
 Fk:loadTranslationTable{
   ["huatuo"] = "华佗",
 }
 
 local lvbu = General:new(extension, "lvbu", "qun", 4)
-extension:addGeneral(lvbu)
 Fk:loadTranslationTable{
   ["lvbu"] = "吕布",
 }
 
 local diaochan = General:new(extension, "diaochan", "qun", 3)
-extension:addGeneral(diaochan)
 Fk:loadTranslationTable{
   ["diaochan"] = "貂蝉",
 }
diff --git a/packages/standard_cards/init.lua b/packages/standard_cards/init.lua
index cdc11179..341ebf9d 100644
--- a/packages/standard_cards/init.lua
+++ b/packages/standard_cards/init.lua
@@ -862,6 +862,24 @@ extension:addCards({
   niohShield,
 })
 
+local horseSkill = fk.CreateDistanceSkill{
+  name = "horse_skill",
+  global = true,
+  correct_func = function(self, from, to)
+    local ret = 0
+    if from:getEquipment(Card.SubtypeOffensiveRide) then
+      ret = ret - 1
+    end
+    if to:getEquipment(Card.SubtypeDefensiveRide) then
+      ret = ret + 1
+    end
+    return ret
+  end,
+}
+if not Fk.skills["horse_skill"] then
+  Fk:addSkill(horseSkill)
+end
+
 local diLu = fk.CreateDefensiveRide{
   name = "dilu",
   suit = Card.Club,
diff --git a/qml/Pages/RoomElement/SkillArea.qml b/qml/Pages/RoomElement/SkillArea.qml
index 8f4a2eb6..21efb4e0 100644
--- a/qml/Pages/RoomElement/SkillArea.qml
+++ b/qml/Pages/RoomElement/SkillArea.qml
@@ -71,7 +71,7 @@ Flickable {
       "GetSkillData",
       [skill_name]
     ));
-    if (data.freq = "active") {
+    if (data.freq === "active") {
       active_skills.append(data);
     } else {
       not_active_skills.append(data);