diff --git a/.gitignore b/.gitignore
index addb66a9..2af8dd74 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
 # Compile output
 /build/
 /docs/build
+/docs/.venv
 /*.o
 /zh_CN.qm
 /fk_ver
diff --git a/docs/dev/index.rst b/docs/dev/index.rst
index 9df202de..094d10e3 100644
--- a/docs/dev/index.rst
+++ b/docs/dev/index.rst
@@ -19,3 +19,4 @@
     ui.rst
     hegemony.rst
     shendiaochan.rst
+    schedule.rst
diff --git a/docs/dev/schedule.rst b/docs/dev/schedule.rst
new file mode 100644
index 00000000..04404c59
--- /dev/null
+++ b/docs/dev/schedule.rst
@@ -0,0 +1,102 @@
+.. SPDX-License-Identifier: GFDL-1.3-or-later
+
+关于Fk在同一个Lua中运行多个游戏房间的思考
+=========================================
+
+目前Fk的实现中，每个游戏房间是一根线程，这就出现了一个问题：
+当同时游戏的房间很多的时候，会给RAM带来相当大的负担，毕竟lua_State太多了，
+每个Room都有一个。 目前比较流行的模式是只需三人就可进行的斗地主，
+有时候同时运行着30多桌斗地主，直接把内存推向1GB占用，云服务器那才多少点资源。
+
+如果这么多房间都在同一个Lua运行的话，情况应该会有很大改观。
+
+多个房间如何调度？
+------------------
+
+在当前阶段已经实现了重连和观战机制，这是借助于协程机制实现的。
+当Lua正在执行delay或者等待用户答复时，Lua会从主协程中切换出来，
+然后去另一个协程处理诸如旁观、重连等游戏逻辑之外的请求。
+
+如果把这种空白时间更加充分的利用起来的话，或许就能同时执行多个房间了。
+
+现在每个游戏房间在Lua中都是一个Room对象的实例，而Room
+本身是通过一个协程执行着主游戏逻辑。
+考虑修改一下，使得同一个Lua中能执行多个Room协程。
+
+暂且考虑开个数组保存所有正在运行中的房间。
+
+就绪队列
+--------
+
+调度器除了维护运行中房间的数组之外，还维护一个就绪队列。
+
+当房间不处于阻塞状态时，或者已经可以脱离阻塞状态，那么就认为他就绪。
+
+此外还有一个特殊的协程，他用来处理托管、旁观等请求。
+当他的这个请求队列为空的时候，也视为他未就绪。
+
+.. note::
+
+   所谓阻塞状态目前指的是正在delay或者正在等候答复时。自然而然的，
+   脱离阻塞状态就是delay的时间已经结束或者已收到答复。
+
+当所有房间全部未就绪时，调度器调用sleep睡一段时间，让出CPU。
+
+当房间因为delay而延时时，可以知道他恢复就绪的确切等待时间。但如果是等待答复、
+等待新请求这种依赖玩家操作的协程，其就绪时间就完全不可预测了。
+正是这种不可预测的等待时间才使得我们调度器只能小睡个几毫秒。
+
+如何多睡一段时间？
+------------------
+
+假设有多个房处于delay中，那么能睡的最长时间就是其中所有delay剩余时间的最小值。
+但问题在于那些不可预测的就绪时间。如果另一个线程能告诉Lua答复已经就绪的话，
+那么睡眠问题就好解决的多了。
+
+实际上，可以借助信号量机制。当调度器开始睡觉时，肯定是调用了cpp函数。
+这个cpp函数里面先将一个信号量置为0，然后再tryAcquire这个信号量一段时间。
+当收到答复/收到请求时，把这个信号量+1。这样调度器就知道自己该醒过来啦。
+
+如何避免房间等待太久？
+----------------------
+
+目前的调度思路如下：
+
+- 若就绪队列为空，那么从所有运行中的房间进行一遍筛选。
+- 若还为空，再筛选。
+- 假如第二遍还空，那就睡觉。
+- 假如就绪队列不空，那么弹出第一个，然后把控制权交给这个协程，等他自己让出。
+
+在这个过程中，由于有些房间在等待就绪队列变空的过程中满足了就绪的条件，
+那么再次筛选时，有可能重复的房间又会再次位于就绪队列靠前的位置。
+这虽然不会导致某个房间永久等待下去的情况，但却可能让一个房间等待太长时间，
+那我就又要被艾特了。
+
+一种或许可行的解法是，在再次刷新队列的时候，优先选出上次队列里面没有的房间。
+不知道这样如何呢？
+
+怎么把现有的改成这样？
+----------------------
+
+CPP代码方面，首先Room已经不再是一个线程了，自然不能再当QThread的子类。
+另外开个什么类来占据线程吧。
+
+既然不是QThread的子类的话，那Room::run就得改了。原本是启动线程，现在还是改成
+pushRequest吧。新请求立刻唤醒调度器，然后调度器切到请求处理协程处理新房间请求，
+然后就开战！
+
+既然要pushRequest，那么原先的请求队列也要从Room中移走了，这个得直接归属于线程。
+当然，lua_State也要从Room撤走。
+
+Lua代码方面，首先由于Engine成了所有房间共用的变量，必须杜绝所有对Engine
+内变量的修改。点名cost_data和card.mark，这两个东西得通过__index大法托管给
+Room挂着。剩下的没啥好说的，当然还有实现调度器。
+
+协程池
+------
+
+虽然题文无关，但是FK确实在运行过程中不断的产生着协程。
+为了避免因为不断产生新的协程导致的开销，可以使用协程池来管理。
+
+用完的协程就存在某个数组留待下次使用。当需要启动一个新协程的时候，
+先从协程池找，没有的话就新建一个。
diff --git a/lua/core/debug.lua b/lua/core/debug.lua
index 423aa5f2..daa70fa9 100644
--- a/lua/core/debug.lua
+++ b/lua/core/debug.lua
@@ -4,5 +4,36 @@
 inspect = require "inspect"
 dbg = require "debugger"
 
+function PrintWhere()
+  local info = debug.getinfo(2)
+  local name = info.name
+  local line = info.currentline
+  local namewhat = info.namewhat
+  local shortsrc = info.short_src
+  if (namewhat == "method") and
+    (shortsrc ~= "[C]") and
+    (not string.find(shortsrc, "/lib")) then
+    print(shortsrc .. ":" .. line .. ": " .. name)
+  end
+end
+--debug.sethook(PrintWhere, "l")
+
+function Traceback()
+  print(debug.traceback())
+end
+
+local msgh = function(err)
+  fk.qCritical(err)
+  print(debug.traceback(nil, 2))
+end
+
+function Pcall(f, ...)
+  local ret = { xpcall(f, msgh, ...) }
+  local err = table.remove(ret, 1)
+  if err ~= false then
+    return table.unpack(ret)
+  end
+end
+
 function p(v) print(inspect(v)) end
 function pt(t) for k, v in pairs(t) do print(k, v) end end
diff --git a/lua/core/player.lua b/lua/core/player.lua
index 724454b4..635e09df 100644
--- a/lua/core/player.lua
+++ b/lua/core/player.lua
@@ -77,7 +77,6 @@ function Player:initialize()
   self.chained = false
   self.dying = false
   self.dead = false
-  self.state = ""
   self.drank = 0
 
   self.player_skills = {}
diff --git a/lua/core/skill.lua b/lua/core/skill.lua
index 33db303d..5128e3e9 100644
--- a/lua/core/skill.lua
+++ b/lua/core/skill.lua
@@ -57,6 +57,20 @@ function Skill:initialize(name, frequency)
   self.attached_equip = nil
 end
 
+function Skill:__index(k)
+  if k == "cost_data" then
+    return Fk:currentRoom().skill_costs[self.name]
+  end
+end
+
+function Skill:__newindex(k, v)
+  if k == "cost_data" then
+    Fk:currentRoom().skill_costs[self.name] = v
+  else
+    rawset(self, k, v)
+  end
+end
+
 function Skill:__tostring()
   return "<Skill " .. self.name .. ">"
 end
diff --git a/lua/core/util.lua b/lua/core/util.lua
index cdbd7ca9..a90511e0 100644
--- a/lua/core/util.lua
+++ b/lua/core/util.lua
@@ -26,7 +26,9 @@ Util.lockTable = function(t)
   return setmetatable({}, new_mt)
 end
 
-function printf(fmt, ...) print(string.format(fmt, ...)) end
+function printf(fmt, ...)
+  print(string.format(fmt, ...))
+end
 
 -- the iterator of QList object
 local qlist_iterator = function(list, n)
@@ -307,34 +309,6 @@ function string:endsWith(e)
   return e == "" or self:sub(-#e) == e
 end
 
----@class Sql
-Sql = {
-  ---@param filename string
-  open = function(filename)
-    return fk.OpenDatabase(filename)
-  end,
-
-  ---@param db fk.SQLite3
-  close = function(db)
-    fk.CloseDatabase(db)
-  end,
-
-  --- Execute an SQL statement.
-  ---@param db fk.SQLite3
-  ---@param sql string
-  exec = function(db, sql)
-    fk.ExecSQL(db, sql)
-  end,
-
-  --- Execute a `SELECT` SQL statement.
-  ---@param db fk.SQLite3
-  ---@param sql string
-  ---@return table[] @ Array of Json object, the key is column name and value is row value
-  exec_select = function(db, sql)
-    return json.decode(fk.SelectFromDb(db, sql))
-  end,
-}
-
 FileIO = {
   pwd = fk.QmlBackend_pwd,
   ls = function(filename)
diff --git a/lua/lsp/player.lua b/lua/lsp/player.lua
index 2dc130e1..39a7e886 100644
--- a/lua/lsp/player.lua
+++ b/lua/lsp/player.lua
@@ -8,42 +8,12 @@ FPlayer = {}
 ---@return integer id
 function FPlayer:getId()end
 
----@param id integer
-function FPlayer:setId(id)end
-
 ---@return string name
 function FPlayer:getScreenName()end
 
----@param name string
-function FPlayer:setScreenName(name)end
-
 ---@return string avatar
 function FPlayer:getAvatar()end
 
----@param avatar string
-function FPlayer:setAvatar(avatar)end
-
----@return string state
-function FPlayer:getStateString()end
-
----@param state string
-function FPlayer:setStateString(state)end
-
----@class fk.ServerPlayer : fk.Player
-FServerPlayer = {}
-
----@return fk.Server
-function FServerPlayer:getServer()end
-
----@return fk.Room
-function FServerPlayer:getRoom()end
-
----@param room fk.Room
-function FServerPlayer:setRoom(room)end
-
----@param msg string
-function FServerPlayer:speak(msg)end
-
 --- Send a request to client, and allow client to reply within *timeout* seconds.
 ---
 --- *timeout* must not be negative or **nil**.
diff --git a/lua/lsp/server.lua b/lua/lsp/server.lua
index 7f99a263..2205e73a 100644
--- a/lua/lsp/server.lua
+++ b/lua/lsp/server.lua
@@ -1,52 +1 @@
 -- SPDX-License-Identifier: GPL-3.0-or-later
-
----@meta
-
----@class fk.Server
-FServer = {}
-
----@type fk.Server
-fk.ServerInstance = {}
-
----@class fk.Room
---- Room (C++)
-FRoom = {}
-
----@param owner fk.ServerPlayer
----@param name string
----@param capacity integer
-function FServer:createRoom(owner,name,capacity)end
-
----@param id integer
----@return fk.Room
-function FServer:findRoom(id)end
-
----@return fk.Room
-function FServer:lobby()end
-
----@param id integer
----@return fk.ServerPlayer
-function FServer:findPlayer(id)end
-
----@return fk.SQLite3
-function FServer:getDatabase()end
-
-function FRoom:getServer()end
-function FRoom:getId()end
-function FRoom:isLobby()end
-function FRoom:getName()end
-function FRoom:setName(name)end
-function FRoom:getCapacity()end
-function FRoom:setCapacity(capacity)end
-function FRoom:isFull()end
-function FRoom:isAbandoned()end
-function FRoom:addPlayer(player)end
-function FRoom:removePlayer(player)end
-function FRoom:getOwner()end
-function FRoom:setOwner(owner)end
-function FRoom:getPlayers()end
-function FRoom:findPlayer(id)end
-function FRoom:getTimeout()end
-function FRoom:isStarted()end
-function FRoom:doBroadcastNotify(targets,command,jsonData)end
-function FRoom:gameOver()end
diff --git a/lua/lsp/sqlite.lua b/lua/lsp/sqlite.lua
index 23145ce7..2205e73a 100644
--- a/lua/lsp/sqlite.lua
+++ b/lua/lsp/sqlite.lua
@@ -1,22 +1 @@
 -- SPDX-License-Identifier: GPL-3.0-or-later
-
----@meta
-
----@class fk.SQLite3
-SQLite3 = {}
-
----@param filename string
----@return fk.SQLite3
-function fk.OpenDatabase(filename)end
-
----@param db fk.SQLite3
----@param sql string
----@return string jsonData
-function fk.SelectFromDb(db, sql)end
-
----@param db fk.SQLite3
----@param sql string
-function fk.ExecSQL(db, sql)end
-
----@param db fk.SQLite3
-function fk.CloseDatabase(db)end
diff --git a/lua/server/events/gameflow.lua b/lua/server/events/gameflow.lua
index f9e7b9be..76151365 100644
--- a/lua/server/events/gameflow.lua
+++ b/lua/server/events/gameflow.lua
@@ -47,16 +47,6 @@ local function discardInit(room, player)
   end
 end
 
-local function checkNoHuman(room)
-  for _, p in ipairs(room.players) do
-    -- TODO: trust
-    if p.serverplayer:getStateString() == "online" then
-      return
-    end
-  end
-  room:gameOver("")
-end
-
 GameEvent.functions[GameEvent.DrawInitial] = function(self)
   local room = self.room
 
@@ -96,6 +86,13 @@ GameEvent.functions[GameEvent.DrawInitial] = function(self)
   local currentTime = os.time()
   local elapsed = 0
 
+  for _, id in ipairs(luck_data.playerList) do
+    local pl = room:getPlayerById(id)
+    if luck_data[id].luckTime > 0 then
+      pl.serverplayer:setThinking(true)
+    end
+  end
+
   while true do
     elapsed = os.time() - currentTime
     if remainTime - elapsed <= 0 then
@@ -112,14 +109,16 @@ GameEvent.functions[GameEvent.DrawInitial] = function(self)
     end
 
     for _, id in ipairs(ldata.playerList) do
-      if room:getPlayerById(id)._splayer:getStateString() ~= "online" then
+      local pl = room:getPlayerById(id)
+      if pl._splayer:getState() ~= fk.Player_Online then
         ldata[id].luckTime = 0
+        pl.serverplayer:setThinking(false)
       end
     end
 
     -- room:setTag("LuckCardData", ldata)
 
-    checkNoHuman(room)
+    room:checkNoHuman()
 
     coroutine.yield("__handleRequest", (remainTime - elapsed) * 1000)
   end
diff --git a/lua/server/gameevent.lua b/lua/server/gameevent.lua
index b3ac7b60..6c4d9bfd 100644
--- a/lua/server/gameevent.lua
+++ b/lua/server/gameevent.lua
@@ -186,13 +186,10 @@ function GameEvent:clear()
 
   logic.game_event_stack:pop()
 
-  local err, msg
-  err, msg = xpcall(self.exit_func, debug.traceback, self)
-  if err == false then fk.qCritical(msg) end
+  Pcall(self.exit_func, self)
   for _, f in ipairs(self.extra_exit_funcs) do
     if type(f) == "function" then
-      err, msg = xpcall(f, debug.traceback, self)
-      if err == false then fk.qCritical(msg) end
+      Pcall(f, self)
     end
   end
 end
diff --git a/lua/server/request.lua b/lua/server/request.lua
index 051caa62..dadc7823 100644
--- a/lua/server/request.lua
+++ b/lua/server/request.lua
@@ -105,6 +105,8 @@ request_handlers["luckcard"] = function(room, id, reqlist)
 
   if pdata.luckTime > 0 then
     p:doNotify("AskForLuckCard", pdata.luckTime)
+  else
+    p.serverplayer:setThinking(false)
   end
 
   room:setTag("LuckCardData", luck_data)
@@ -132,23 +134,34 @@ request_handlers["changeself"] = function(room, id, reqlist)
   })
 end
 
+request_handlers["newroom"] = function(s, id)
+  s:registerRoom(id)
+end
+
+-- 处理异步请求的协程，本身也是个死循环就是了。
+-- 为了适应调度器，目前又暂且将请求分为“耗时请求”和不耗时请求。
+-- 耗时请求处理后会立刻挂起。不耗时的请求则会不断处理直到请求队列空后再挂起。
 local function requestLoop(self)
-  local rest_time = 0
   while true do
     local ret = false
-    local request = self.room:fetchRequest()
+    local request = self.thread:fetchRequest()
     if request ~= "" then
       ret = true
       local reqlist = request:split(",")
-      local id = tonumber(reqlist[1])
-      local command = reqlist[2]
-      request_handlers[command](self, id, reqlist)
-    elseif rest_time > 10 then
-      -- let current thread sleep 10ms
-      -- otherwise CPU usage will be 100% (infinite yield <-> resume loop)
-      fk.QThread_msleep(10)
+      local roomId = tonumber(table.remove(reqlist, 1))
+      local room = self:getRoom(roomId)
+
+      if room then
+        RoomInstance = room
+        local id = tonumber(reqlist[1])
+        local command = reqlist[2]
+        request_handlers[command](room, id, reqlist)
+        RoomInstance = nil
+      end
+    end
+    if not ret then
+      coroutine.yield()
     end
-    rest_time = coroutine.yield(ret)
   end
 end
 
diff --git a/lua/server/room.lua b/lua/server/room.lua
index 7f150c9d..90713596 100644
--- a/lua/server/room.lua
+++ b/lua/server/room.lua
@@ -5,6 +5,8 @@
 --- 一个房间中只有一个Room实例，保存在RoomInstance全局变量中。
 ---@class Room : Object
 ---@field public room fk.Room @ C++层面的Room类实例，别管他就是了，用不着
+---@field public id integer @ 房间的id
+---@field private main_co any @ 本房间的主协程
 ---@field public players ServerPlayer[] @ 这个房间中所有参战玩家
 ---@field public alive_players ServerPlayer[] @ 所有还活着的玩家
 ---@field public observers fk.ServerPlayer[] @ 旁观者清单，这是c++玩家列表，别乱动
@@ -24,6 +26,7 @@
 ---@field public logic GameLogic @ 这个房间使用的游戏逻辑，可能根据游戏模式而变动
 ---@field public request_queue table<userdata, table>
 ---@field public request_self table<integer, integer>
+---@field public skill_costs table<string, any> @ 存放skill.cost_data用
 local Room = class("Room")
 
 -- load classes used by the game
@@ -62,46 +65,7 @@ dofile "lua/server/ai/init.lua"
 ---@param _room fk.Room
 function Room:initialize(_room)
   self.room = _room
-  _room.startGame = function(_self)
-    Room.initialize(self, _room)  -- clear old data
-    self.settings = json.decode(_room:settings())
-    Fk.disabled_packs = self.settings.disabledPack
-    Fk.disabled_generals = self.settings.disabledGenerals
-    local main_co = coroutine.create(function()
-      self:run()
-    end)
-    local request_co = coroutine.create(function()
-      self:requestLoop()
-    end)
-    local ret, err_msg, rest_time = true, true
-    while not self.game_finished do
-      ret, err_msg, rest_time = coroutine.resume(main_co, err_msg)
-
-      -- handle error
-      if ret == false then
-        fk.qCritical(err_msg)
-        print(debug.traceback(main_co))
-        break
-      end
-
-      ret, err_msg = coroutine.resume(request_co, rest_time)
-      if ret == false then
-        fk.qCritical(err_msg)
-        print(debug.traceback(request_co))
-        break
-      end
-
-      -- If ret == true, then when err_msg is true, that means no request
-    end
-
-    coroutine.close(main_co)
-    coroutine.close(request_co)
-
-    if not self.game_finished then
-      self:doBroadcastNotify("GameOver", "")
-      self.room:gameOver()
-    end
-  end
+  self.id = _room:getId()
 
   self.players = {}
   self.alive_players = {}
@@ -123,8 +87,119 @@ function Room:initialize(_room)
   end
   self.request_queue = {}
   self.request_self = {}
+  self.skill_costs = {}
+
+  self.settings = json.decode(self.room:settings())
+  Fk.disabled_packs = self.settings.disabledPack
+  Fk.disabled_generals = self.settings.disabledGenerals
 end
 
+-- 供调度器使用的函数。能让房间开始运行/从挂起状态恢复。
+function Room:resume()
+  -- 如果还没运行的话就先创建自己的主协程
+  if not self.main_co then
+    self.main_co = coroutine.create(function()
+      self:run()
+    end)
+  end
+
+  local ret, err_msg, rest_time = true, true, nil
+  local main_co = self.main_co
+
+  if self:checkNoHuman() then
+    return true
+  end
+
+  if not self.game_finished then
+    ret, err_msg, rest_time = coroutine.resume(main_co, err_msg)
+
+    -- handle error
+    if ret == false then
+      fk.qCritical(err_msg)
+      print(debug.traceback(main_co))
+      goto GAME_OVER
+    end
+
+    if rest_time == "over" then
+      goto GAME_OVER
+    end
+
+    return false, rest_time
+  end
+
+  ::GAME_OVER::
+  coroutine.close(main_co)
+  self.main_co = nil
+  return true
+end
+
+-- 供调度器使用的函数，用来指示房间是否就绪。
+-- 如果没有就绪的话，可能会返回第二个值来告诉调度器自己还有多久就绪。
+function Room:isReady()
+  -- 没有活人了？那就告诉调度器我就绪了，恢复时候就会自己杀掉
+  if self:checkNoHuman(true) then
+    return true
+  end
+
+  -- 因为delay函数而延时：判断延时是否已经结束。
+  -- 注意整个delay函数的实现都搬到这来了，delay本身只负责挂起协程了。
+  if self.in_delay then
+    local rest = self.delay_duration - (os.getms() - self.delay_start) / 1000
+    if rest <= 0 then
+      self.in_delay = false
+      return true
+    end
+    return false, rest
+  end
+
+  -- 剩下的就是因为等待应答而未就绪了
+  -- 检查所有正在等回答的玩家，如果已经过了烧条时间
+  -- 那么就不认为他还需要时间就绪了
+  -- 然后在调度器第二轮刷新的时候就应该能返回自己已就绪
+  local ret = true
+  local rest
+  for _, p in ipairs(self.players) do
+    -- 这里判断的话需要用_splayer了，不然一控多的情况下会导致重复判断
+    if p._splayer:thinking() then
+      ret = false
+      -- 烧条烧光了的话就把thinking设为false
+      rest = p.request_timeout * 1000 - (os.getms() -
+        p.request_start) / 1000
+
+      if rest <= 0 then
+        p._splayer:setThinking(false)
+      end
+    end
+  end
+  return ret, (rest and rest > 1) and rest or nil
+end
+
+function Room:checkNoHuman(chkOnly)
+  if #self.players == 0 then return end
+
+  for _, p in ipairs(self.players) do
+    -- TODO: trust
+    if p.serverplayer:getState() == fk.Player_Online then
+      return
+    end
+  end
+
+  if not chkOnly then
+    self:gameOver("")
+  end
+  return true
+end
+
+function Room:__tostring()
+  return string.format("<Room #%d>", self.id)
+end
+
+--[[ 敢删就寄，算了
+function Room:__gc()
+  self.room:checkAbandoned()
+end
+--]]
+
 --- 正式在这个房间中开始游戏。
 ---
 --- 当这个函数返回之后，整个Room线程也宣告结束。
@@ -636,6 +711,12 @@ function Room:doRaceRequest(command, players, jsonData)
         table.removeOne(players, p)
         table.insertIfNeed(canceled_players, p)
       end
+
+      -- 骗过调度器让他以为自己尚未就绪
+      if p.id > 0 then
+        p.request_timeout = remainTime - elapsed
+        p.serverplayer:setThinking(true)
+      end
     end
     if winner then
       self:doBroadcastNotify("CancelRequest", "")
@@ -657,21 +738,17 @@ function Room:doRaceRequest(command, players, jsonData)
   return ret
 end
 
-Room.requestLoop = require "server.request"
 
 --- 延迟一段时间。
 ---
---- 这个函数只应该在主协程中使用。
+--- 这个函数不应该在请求处理协程中使用。
 ---@param ms integer @ 要延迟的毫秒数
 function Room:delay(ms)
   local start = os.getms()
-  while true do
-    local rest = ms - (os.getms() - start) / 1000
-    if rest <= 0 then
-      break
-    end
-    coroutine.yield("__handleRequest", rest)
-  end
+  self.delay_start = start
+  self.delay_duration = ms
+  self.in_delay = true
+  coroutine.yield("__handleRequest", ms)
 end
 
 --- 向多名玩家告知一次移牌行为。
@@ -1158,7 +1235,7 @@ function Room:askForGeneral(player, generals, n)
   if #generals == n then return n == 1 and generals[1] or generals end
   local defaultChoice = table.random(generals, n)
 
-  if (player.state == "online") then
+  if (player.serverplayer:getState() == fk.Player_Online) then
     local result = self:doRequest(player, command, json.encode{ generals, n })
     local choices
     if result == "" then
@@ -2766,6 +2843,8 @@ end
 --- 结束一局游戏。
 ---@param winner string @ 获胜的身份，空字符串表示平局
 function Room:gameOver(winner)
+  if not self.game_started then return end
+
   self.logic:trigger(fk.GameFinished, nil, winner)
   self.game_started = false
   self.game_finished = true
@@ -2794,7 +2873,16 @@ function Room:gameOver(winner)
   end
 
   self.room:gameOver()
-  coroutine.yield("__handleRequest", 0)
+
+  if table.contains(
+    { "running", "normal" },
+    coroutine.status(self.main_co)
+  ) then
+    coroutine.yield("__handleRequest", "over")
+  else
+    coroutine.close(self.main_co)
+    self.main_co = nil
+  end
 end
 
 ---@param card Card
@@ -2913,6 +3001,4 @@ function Room:updateQuestSkillState(player, skillName, failed)
   })
 end
 
-function CreateRoom(_room)
-  RoomInstance = Room:new(_room)
-end
+return Room
diff --git a/lua/server/scheduler.lua b/lua/server/scheduler.lua
new file mode 100644
index 00000000..57a97694
--- /dev/null
+++ b/lua/server/scheduler.lua
@@ -0,0 +1,149 @@
+-- SPDX-License-Identifier: GPL-3.0-or-later
+
+local Room = require "server.room"
+
+--[[
+local verbose = function(...)
+  printf(...)
+end
+--]]
+
+-- 所有当前正在运行的房间（即游戏尚未结束的房间）
+---@type table<integer, Room>
+local runningRooms = {}
+
+-- 所有处于就绪态的房间，以及request协程（如果就绪的话）
+---@type Room[]
+local readyRooms = {}
+
+local requestCo = coroutine.create(function(room)
+  require "server.request"(room)
+end)
+
+-- 仿照Room接口编写的request协程处理器
+local requestRoom = setmetatable({
+
+  -- minDelayTime 是当没有任何就绪房间时，可以睡眠的时间。
+  -- 因为这个时间是所有房间预期就绪用时的最小值，故称为minDelayTime。
+  minDelayTime = -1,
+
+  getRoom = function(_, roomId)
+    return runningRooms[roomId]
+  end,
+
+  resume = function(self)
+    local err, msg = coroutine.resume(requestCo, self)
+    if err == false then
+      fk.qCritical(msg)
+      print(debug.traceback(requestCo))
+    end
+    return nil, 0
+  end,
+
+  isReady = function(self)
+    return self.thread:hasRequest()
+  end,
+
+  registerRoom = function(self, id)
+    local cRoom = self.thread:getRoom(id)
+    local room = Room:new(cRoom)
+    runningRooms[room.id] = room
+  end,
+
+}, {
+  __tostring = function()
+    return "<Request Room>"
+  end,
+})
+
+runningRooms[-1] = requestRoom
+
+-- 从所有运行中房间中挑出就绪的房间。
+-- 方法暂时就是最简单的遍历。
+local function refreshReadyRooms()
+  -- verbose '[+] Refreshing ready queue...'
+  for k, v in pairs(runningRooms) do
+    local ready, rest = v:isReady()
+    if ready then
+      table.insertIfNeed(readyRooms, v)
+    elseif rest and rest >= 0 then
+      local time = requestRoom.minDelayTime
+      time = math.min((time <= 0 and 9999999 or time), rest)
+      requestRoom.minDelayTime = math.ceil(time)
+    end
+  end
+  -- verbose('[+] now have %d ready rooms...', #readyRooms)
+end
+
+-- 主循环。只要线程没有被杀掉，就一直循环下去。
+-- 函数每轮循环会从队列中取一个元素并交给控制权，
+-- 如果没有，则尝试刷新队列，无法刷新则开始睡眠。
+local function mainLoop()
+  -- request协程的专用特判变量。因为处理request不应当重置睡眠时长
+  local rest_sleep_time
+
+  while not requestRoom.thread:isTerminated() do
+    local room = table.remove(readyRooms, 1)
+    if room then
+      -- verbose '============= LOOP =============='
+      -- verbose('[*] Switching to %s...', tostring(room))
+
+      RoomInstance = (room ~= requestRoom and room or nil)
+      local over, rest = room:resume()
+      RoomInstance = nil
+
+      if over then
+        -- verbose('[#] %s is finished, removing ...', tostring(room))
+        room.logic = nil
+        runningRooms[room.id] = nil
+      else
+        local time = requestRoom.minDelayTime
+        if room == requestRoom then
+          rest = rest_sleep_time
+        end
+
+        if rest and rest >= 0 then
+          time = math.min((time <= 0 and 9999999 or time), rest)
+        else
+          time = -1
+        end
+        requestRoom.minDelayTime = math.ceil(time)
+        -- verbose("[+] minDelay is %d ms...", requestRoom.minDelayTime)
+        -- verbose('[-] %s successfully yielded, %d ready rooms left...',
+        --   tostring(room), #readyRooms)
+      end
+    else
+      refreshReadyRooms()
+      if #readyRooms == 0 then
+        refreshReadyRooms()
+        if #readyRooms == 0 then
+          local time = requestRoom.minDelayTime
+          -- verbose('[.] Sleeping for %d ms...', time)
+          local cur = os.getms()
+
+          -- 调用RoomThread的trySleep函数开始真正的睡眠。会被wakeUp(c++)唤醒。
+          requestRoom.thread:trySleep(time)
+
+          -- verbose('[!] Waked up after %f ms...', (os.getms() - cur) / 1000)
+
+          if time > 0 then
+            rest_sleep_time = math.floor(time - (os.getms() - cur) / 1000)
+          else
+            rest_sleep_time = -1
+          end
+
+          requestRoom.minDelayTime = -1
+        end
+      end
+    end
+  end
+  -- verbose '=========== LOOP END ============'
+  -- verbose '[:)] Goodbye!'
+end
+
+-- 当Cpp侧的RoomThread运行时，以下这个函数就是这个线程的主函数。
+-- 而这个函数里面又调用了上面的mainLoop。
+function InitScheduler(_thread)
+  requestRoom.thread = _thread
+  Pcall(mainLoop)
+end
diff --git a/lua/server/serverplayer.lua b/lua/server/serverplayer.lua
index b5c74599..bb54813a 100644
--- a/lua/server/serverplayer.lua
+++ b/lua/server/serverplayer.lua
@@ -24,7 +24,6 @@ function ServerPlayer:initialize(_self)
   self._splayer = _self -- 真正在玩的玩家
   self._observers = { _self } -- "旁观"中的玩家，然而不包括真正的旁观者
   self.id = _self:getId()
-  self.state = _self:getStateString()
   self.room = nil
 
   -- Below are for doBroadcastRequest
@@ -86,46 +85,36 @@ function ServerPlayer:doRequest(command, jsonData, timeout)
   self.serverplayer:doRequest(command, jsonData, timeout)
 end
 
-local function checkNoHuman(room)
-  for _, p in ipairs(room.players) do
-    -- TODO: trust
-    if p.serverplayer:getStateString() == "online" then
-      return
-    end
-  end
-  room:gameOver("")
-end
-
-
 local function _waitForReply(player, timeout)
   local result
   local start = os.getms()
-  local state = player.serverplayer:getStateString()
-  if state ~= "online" then
-    if state ~= "robot" then
-      checkNoHuman(player.room)
+  local state = player.serverplayer:getState()
+  player.request_timeout = timeout
+  player.request_start = start
+  if state ~= fk.Player_Online then
+    if state ~= fk.Player_Robot then
+      player.room:checkNoHuman()
       player.room:delay(500)
       return "__cancel"
     end
     -- Let AI make reply. First handle request
-    local ret_msg = true
-    while ret_msg do
-      -- when ret_msg is false, that means there is no request in the queue
-      ret_msg = coroutine.yield("__handleRequest", 1)
-    end
+    -- coroutine.yield("__handleRequest", 0)
 
-    checkNoHuman(player.room)
+    player.room:checkNoHuman()
     player.ai:readRequestData()
     local reply = player.ai:makeReply()
     return reply
   end
   while true do
+    player.serverplayer:setThinking(true)
     result = player.serverplayer:waitForReply(0)
     if result ~= "__notready" then
+      player.serverplayer:setThinking(false)
       return result
     end
     local rest = timeout * 1000 - (os.getms() - start) / 1000
     if timeout and rest <= 0 then
+      player.serverplayer:setThinking(false)
       return ""
     end
     coroutine.yield("__handleRequest", rest)
@@ -277,7 +266,7 @@ end
 
 function ServerPlayer:reconnect()
   local room = self.room
-  self.serverplayer:setStateString("online")
+  self.serverplayer:setState(fk.Player_Online)
 
   self:doNotify("Setup", json.encode{
     self.id,
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 3f97f135..1310d230 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -11,6 +11,7 @@ set(freekill_SRCS
   "server/server.cpp"
   "server/serverplayer.cpp"
   "server/room.cpp"
+  "server/roomthread.cpp"
   "ui/qmlbackend.cpp"
   "swig/freekill-wrap.cxx"
 )
diff --git a/src/network/router.cpp b/src/network/router.cpp
index 91f73109..cf0f50e2 100644
--- a/src/network/router.cpp
+++ b/src/network/router.cpp
@@ -3,6 +3,7 @@
 #include "router.h"
 #include "client.h"
 #include "client_socket.h"
+#include "roomthread.h"
 #include <qjsondocument.h>
 #ifndef FK_CLIENT_ONLY
 #include "server.h"
@@ -311,6 +312,11 @@ void Router::handlePacket(const QByteArray &rawPacket) {
   else if (type & TYPE_REPLY) {
     QMutexLocker locker(&replyMutex);
 
+    ServerPlayer *player = qobject_cast<ServerPlayer *>(parent());
+    player->setThinking(false);
+    // qDebug() << "wake up!";
+    player->getRoom()->getThread()->wakeUp();
+
     if (requestId != this->expectedReplyId)
       return;
 
@@ -328,6 +334,7 @@ void Router::handlePacket(const QByteArray &rawPacket) {
       extraReplyReadySemaphore->release();
       extraReplyReadySemaphore = nullptr;
     }
+
     locker.unlock();
     emit replyReady();
   }
diff --git a/src/server/room.cpp b/src/server/room.cpp
index e0a93e36..0d309eab 100644
--- a/src/server/room.cpp
+++ b/src/server/room.cpp
@@ -5,48 +5,56 @@
 #include <qjsonarray.h>
 #include <qjsondocument.h>
 
+#include "roomthread.h"
 #include "server.h"
 #include "serverplayer.h"
 #include "util.h"
 
-Room::Room(Server *server) {
-  setObjectName("Room");
+Room::Room(RoomThread *m_thread) {
+  auto server = ServerInstance;
   id = server->nextRoomId;
   server->nextRoomId++;
   this->server = server;
-  setParent(server);
+  this->m_thread = m_thread;
+  if (m_thread) { // In case of lobby
+    m_thread->addRoom(this);
+  }
+  // setParent(server);
+
   m_abandoned = false;
   owner = nullptr;
   gameStarted = false;
   robot_id = -2; // -1 is reserved in UI logic
   timeout = 15;
 
+  m_ready = true;
+
   // 如果是普通房间而不是大厅，就初始化Lua，否则置Lua为nullptr
-  L = nullptr;
   if (!isLobby()) {
     // 如果不是大厅，那么：
     // * 只要房间添加人了，那么从大厅中移掉这个人
     // * 只要有人离开房间，那就把他加到大厅去
     connect(this, &Room::playerAdded, server->lobby(), &Room::removePlayer);
     connect(this, &Room::playerRemoved, server->lobby(), &Room::addPlayer);
-
-    L = CreateLuaState();
-    DoLuaScript(L, "lua/freekill.lua");
-    DoLuaScript(L, "lua/server/room.lua");
-    initLua();
   }
 }
 
 Room::~Room() {
-  if (isRunning()) {
-    wait();
+  if (gameStarted) {
+    gameOver();
+  }
+
+  if (m_thread) {
+    m_thread->removeRoom(this);
   }
-  if (L)
-    lua_close(L);
 }
 
 Server *Room::getServer() const { return server; }
 
+RoomThread *Room::getThread() const { return m_thread; }
+
+void Room::setThread(RoomThread *t) { m_thread = t; }
+
 int Room::getId() const { return id; }
 
 void Room::setId(int id) { this->id = id; }
@@ -81,7 +89,20 @@ bool Room::isAbandoned() const {
   return true;
 }
 
-void Room::setAbandoned(bool abandoned) { m_abandoned = abandoned; }
+// Lua专用，lua room销毁时检查c++的Room是不是也差不多可以销毁了
+void Room::checkAbandoned() {
+  if (isAbandoned()) {
+    bool tmp = m_abandoned;
+    m_abandoned = true;
+    if (!tmp) {
+      emit abandoned();
+    } else {
+      deleteLater();
+    }
+  }
+}
+
+void Room::setAbandoned(bool a) { m_abandoned = a; }
 
 ServerPlayer *Room::getOwner() const { return owner; }
 
@@ -218,6 +239,8 @@ void Room::removePlayer(ServerPlayer *player) {
     // 原先的跑路机器人会在游戏结束后自动销毁掉
     server->addPlayer(runner);
 
+    m_thread->wakeUp();
+
     // 发出信号，让大厅添加这个人
     emit playerRemoved(runner);
   }
@@ -397,7 +420,7 @@ void Room::gameOver() {
   // 玩家也不能在这里清除，因为要能返回原来房间继续玩呢
   // players.clear();
   // owner = nullptr;
-  clearRequest();
+  // clearRequest();
 }
 
 void Room::manuallyStart() {
@@ -405,43 +428,11 @@ void Room::manuallyStart() {
     foreach (auto p, players) {
       p->setReady(false);
     }
-    start();
+    gameStarted = true;
+    m_thread->pushRequest(QString("-1,%1,newroom").arg(QString::number(id)));
   }
 }
 
-QString Room::fetchRequest() {
-  if (!gameStarted)
-    return "";
-  request_queue_mutex.lock();
-  QString ret = "";
-  if (!request_queue.isEmpty()) {
-    ret = request_queue.dequeue();
-  }
-  request_queue_mutex.unlock();
-  return ret;
-}
-
 void Room::pushRequest(const QString &req) {
-  if (!gameStarted)
-    return;
-  request_queue_mutex.lock();
-  request_queue.enqueue(req);
-  request_queue_mutex.unlock();
-}
-
-void Room::clearRequest() {
-  request_queue_mutex.lock();
-  request_queue.clear();
-  request_queue_mutex.unlock();
-}
-
-bool Room::hasRequest() const { return !request_queue.isEmpty(); }
-
-void Room::run() {
-  gameStarted = true;
-
-  clearRequest();
-
-  // 此处调用了Lua Room:run()函数
-  roomStart();
+  m_thread->pushRequest(QString("%1,%2").arg(QString::number(id), req));
 }
diff --git a/src/server/room.h b/src/server/room.h
index 6f33135f..95fd40a9 100644
--- a/src/server/room.h
+++ b/src/server/room.h
@@ -5,16 +5,19 @@
 
 class Server;
 class ServerPlayer;
+class RoomThread;
 
-class Room : public QThread {
+class Room : public QObject {
   Q_OBJECT
  public:
-  explicit Room(Server *m_server);
+  explicit Room(RoomThread *m_thread);
   ~Room();
 
   // Property reader & setter
   // ==================================={
   Server *getServer() const;
+  RoomThread *getThread() const;
+  void setThread(RoomThread *t);
   int getId() const;
   void setId(int id);
   bool isLobby() const;
@@ -26,7 +29,8 @@ class Room : public QThread {
   const QByteArray getSettings() const;
   void setSettings(QByteArray settings);
   bool isAbandoned() const;
-  void setAbandoned(bool abandoned);  // never use this function
+  void checkAbandoned();
+  void setAbandoned(bool a);
 
   ServerPlayer *getOwner() const;
   void setOwner(ServerPlayer *owner);
@@ -55,17 +59,8 @@ class Room : public QThread {
   void updateWinRate(int id, const QString &general, const QString &mode,
                      int result);
   void gameOver();
-
-  void initLua();
-
-  void roomStart();
   void manuallyStart();
-  LuaFunction startGame;
-
-  QString fetchRequest();
   void pushRequest(const QString &req);
-  void clearRequest();
-  bool hasRequest() const;
 
  signals:
   void abandoned();
@@ -73,11 +68,9 @@ class Room : public QThread {
   void playerAdded(ServerPlayer *player);
   void playerRemoved(ServerPlayer *player);
 
- protected:
-  virtual void run();
-
  private:
   Server *server;
+  RoomThread *m_thread;
   int id;               // Lobby's id is 0
   QString name;         // “阴间大乱斗”
   int capacity;         // by default is 5, max is 8
@@ -90,12 +83,9 @@ class Room : public QThread {
   QList<int> runned_players;
   int robot_id;
   bool gameStarted;
+  bool m_ready;
 
   int timeout;
-
-  lua_State *L;
-  QMutex request_queue_mutex;
-  QQueue<QString> request_queue;  // json string
 };
 
 #endif  // _ROOM_H
diff --git a/src/server/roomthread.cpp b/src/server/roomthread.cpp
new file mode 100644
index 00000000..1ca74e46
--- /dev/null
+++ b/src/server/roomthread.cpp
@@ -0,0 +1,107 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "roomthread.h"
+#include "server.h"
+#include "util.h"
+#include <qtpreprocessorsupport.h>
+
+RoomThread::RoomThread(Server *m_server) {
+  setObjectName("Room");
+  this->m_server = m_server;
+  m_capacity = 100; // TODO: server cfg
+  terminated = false;
+
+  L = CreateLuaState();
+  DoLuaScript(L, "lua/freekill.lua");
+  DoLuaScript(L, "lua/server/scheduler.lua");
+  start();
+}
+
+RoomThread::~RoomThread() {
+  tryTerminate();
+  if (isRunning()) {
+    wait();
+  }
+  lua_close(L);
+  // foreach (auto room, room_list) {
+  //   room->deleteLater();
+  // }
+}
+
+Server *RoomThread::getServer() const {
+  return m_server;
+}
+
+bool RoomThread::isFull() const {
+  // return room_list.count() >= m_capacity;
+  return m_capacity <= 0;
+}
+
+Room *RoomThread::getRoom(int id) const {
+  return m_server->findRoom(id);
+}
+
+void RoomThread::addRoom(Room *room) {
+  Q_UNUSED(room);
+  m_capacity--;
+}
+
+void RoomThread::removeRoom(Room *room) {
+  room->setThread(nullptr);
+  m_capacity++;
+}
+
+QString RoomThread::fetchRequest() {
+  // if (!gameStarted)
+  //   return "";
+  request_queue_mutex.lock();
+  QString ret = "";
+  if (!request_queue.isEmpty()) {
+    ret = request_queue.dequeue();
+  }
+  request_queue_mutex.unlock();
+  return ret;
+}
+
+void RoomThread::pushRequest(const QString &req) {
+  // if (!gameStarted)
+  //   return;
+  request_queue_mutex.lock();
+  request_queue.enqueue(req);
+  request_queue_mutex.unlock();
+  wakeUp();
+}
+
+void RoomThread::clearRequest() {
+  request_queue_mutex.lock();
+  request_queue.clear();
+  request_queue_mutex.unlock();
+}
+
+bool RoomThread::hasRequest() {
+  request_queue_mutex.lock();
+  auto ret = !request_queue.isEmpty();
+  request_queue_mutex.unlock();
+  return ret;
+}
+
+void RoomThread::trySleep(int ms) {
+  if (sema_wake.available() > 0) {
+    sema_wake.acquire(sema_wake.available());
+  }
+
+  sema_wake.tryAcquire(1, ms);
+}
+
+void RoomThread::wakeUp() {
+  sema_wake.release(1);
+}
+
+void RoomThread::tryTerminate() {
+  terminated = true;
+  wakeUp();
+}
+
+bool RoomThread::isTerminated() const {
+  return terminated;
+}
diff --git a/src/server/roomthread.h b/src/server/roomthread.h
new file mode 100644
index 00000000..f8baf4c3
--- /dev/null
+++ b/src/server/roomthread.h
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef _ROOMTHREAD_H
+#define _ROOMTHREAD_H
+
+#include <qsemaphore.h>
+class Room;
+class Server;
+
+class RoomThread : public QThread {
+  Q_OBJECT
+ public:
+  explicit RoomThread(Server *m_server);
+  ~RoomThread();
+
+  Server *getServer() const;
+  bool isFull() const;
+
+  Room *getRoom(int id) const;
+  void addRoom(Room *room);
+  void removeRoom(Room *room);
+
+  QString fetchRequest();
+  void pushRequest(const QString &req);
+  void clearRequest();
+  bool hasRequest();
+
+  void trySleep(int ms);
+  void wakeUp();
+
+  void tryTerminate();
+  bool isTerminated() const;
+
+ protected:
+  virtual void run();
+
+ private:
+  Server *m_server;
+  // QList<Room *> room_list;
+  int m_capacity;
+
+  lua_State *L;
+  QMutex request_queue_mutex;
+  QQueue<QString> request_queue;  // json string
+  QSemaphore sema_wake;
+  volatile bool terminated;
+};
+
+#endif // _ROOMTHREAD_H
diff --git a/src/server/server.cpp b/src/server/server.cpp
index e6379c11..b3d1a2ed 100644
--- a/src/server/server.cpp
+++ b/src/server/server.cpp
@@ -14,6 +14,7 @@
 #include "packman.h"
 #include "player.h"
 #include "room.h"
+#include "roomthread.h"
 #include "router.h"
 #include "server_socket.h"
 #include "serverplayer.h"
@@ -44,6 +45,8 @@ Server::Server(QObject *parent) : QObject(parent) {
   connect(lobby(), &Room::playerAdded, this, &Server::updateRoomList);
   connect(lobby(), &Room::playerRemoved, this, &Server::updateRoomList);
 
+  threads.append(new RoomThread(this));
+
   // 启动心跳包线程
   auto heartbeatThread = QThread::create([=]() {
     while (true) {
@@ -63,7 +66,7 @@ Server::Server(QObject *parent) : QObject(parent) {
 
       foreach (auto p, this->players.values()) {
         if (p->getState() == Player::Online && !p->alive) {
-          p->kicked();
+          emit p->kicked();
         }
       }
     }
@@ -77,11 +80,11 @@ Server::~Server() {
   isListening = false;
   ServerInstance = nullptr;
   m_lobby->deleteLater();
-  foreach (auto room, idle_rooms) {
-    room->deleteLater();
-  }
-  foreach (auto room, rooms) {
-    room->deleteLater();
+//  foreach (auto room, idle_rooms) {
+//    room->deleteLater();
+//  }
+  foreach (auto thread, threads) {
+    thread->deleteLater();
   }
   sqlite3_close(db);
   RSA_free(rsa);
@@ -102,14 +105,27 @@ void Server::createRoom(ServerPlayer *owner, const QString &name, int capacity,
     return;
   }
   Room *room;
+  RoomThread *thread = nullptr;
+
+  foreach (auto t, threads) {
+    if (!t->isFull()) {
+      thread = t;
+    }
+  }
+  if (!thread && nextRoomId != 0) {
+    thread = new RoomThread(this);
+    threads.append(thread);
+  }
+
   if (!idle_rooms.isEmpty()) {
     room = idle_rooms.pop();
     room->setId(nextRoomId);
     nextRoomId++;
     room->setAbandoned(false);
+    room->setThread(thread);
     rooms.insert(room->getId(), room);
   } else {
-    room = new Room(this);
+    room = new Room(thread);
     connect(room, &Room::abandoned, this, &Server::onRoomAbandoned);
     if (room->isLobby())
       m_lobby = room;
@@ -270,12 +286,10 @@ void Server::processRequest(const QByteArray &msg) {
     body
         << (cmp < 0
                 ? QString("[\"server is still on version %%2\",\"%1\"]")
-                      .arg(FK_VERSION)
-                      .arg("1")
+                      .arg(FK_VERSION, "1")
                 : QString(
                       "[\"server is using version %%2, please update\",\"%1\"]")
-                      .arg(FK_VERSION)
-                      .arg("1"));
+                      .arg(FK_VERSION, "1"));
 
     client->send(JsonArray2Bytes(body));
     client->disconnectFromHost();
@@ -464,26 +478,15 @@ void Server::handleNameAndPassword(ClientSocket *client, const QString &name,
 
 void Server::onRoomAbandoned() {
   Room *room = qobject_cast<Room *>(sender());
-  if (room->isRunning()) {
-    room->wait();
-  }
   room->gameOver();
   rooms.remove(room->getId());
   updateRoomList();
+  // 按理说这时候就可以删除了，但是这里肯定比Lua先检测到。
+  // 倘若在Lua的Room:gameOver时C++的Room被删除了问题就大了。
+  // FIXME: 但是这终归是内存泄漏！以后啥时候再改吧。
   // room->deleteLater();
   idle_rooms.push(room);
-  // 懒得改了！
-  // 这里出bug的原因还是在于room的销毁工作没做好
-  // room销毁这块bug很多
-  // if (idle_rooms.length() > 10) {
-  //   auto junk = idle_rooms[0];
-  //   idle_rooms.removeFirst();
-  //   junk->deleteLater();
-  // }
-#ifdef QT_DEBUG
-  qDebug() << rooms.size() << "running room(s)," << idle_rooms.size()
-           << "idle room(s).";
-#endif
+  room->getThread()->removeRoom(room);
 }
 
 void Server::onUserDisconnected() {
diff --git a/src/server/server.h b/src/server/server.h
index 564771ae..05bc5588 100644
--- a/src/server/server.h
+++ b/src/server/server.h
@@ -11,6 +11,7 @@
 class ServerSocket;
 class ClientSocket;
 class ServerPlayer;
+class RoomThread;
 
 #include "room.h"
 
@@ -62,8 +63,9 @@ private:
   Room *m_lobby;
   QMap<int, Room *> rooms;
   QStack<Room *> idle_rooms;
+  QList<RoomThread *> threads;
   int nextRoomId;
-  friend Room::Room(Server *server);
+  friend Room::Room(RoomThread *m_thread);
   QHash<int, ServerPlayer *> players;
 
   RSA *rsa;
diff --git a/src/server/serverplayer.cpp b/src/server/serverplayer.cpp
index a35dce2c..6e88973c 100644
--- a/src/server/serverplayer.cpp
+++ b/src/server/serverplayer.cpp
@@ -3,6 +3,7 @@
 #include "serverplayer.h"
 #include "client_socket.h"
 #include "room.h"
+#include "roomthread.h"
 #include "router.h"
 #include "server.h"
 
@@ -16,6 +17,7 @@ ServerPlayer::ServerPlayer(Room *room) {
 
   alive = true;
   m_busy = false;
+  m_thinking = false;
 }
 
 ServerPlayer::~ServerPlayer() {
@@ -108,3 +110,16 @@ void ServerPlayer::kick() {
   }
   setSocket(nullptr);
 }
+
+bool ServerPlayer::thinking() {
+  m_thinking_mutex.lock();
+  bool ret = m_thinking;
+  m_thinking_mutex.unlock();
+  return ret;
+}
+
+void ServerPlayer::setThinking(bool t) {
+  m_thinking_mutex.lock();
+  m_thinking = t;
+  m_thinking_mutex.unlock();
+}
diff --git a/src/server/serverplayer.h b/src/server/serverplayer.h
index 30737e02..16361c01 100644
--- a/src/server/serverplayer.h
+++ b/src/server/serverplayer.h
@@ -40,6 +40,9 @@ public:
 
   bool busy() const { return m_busy; }
   void setBusy(bool busy) { m_busy = busy; }
+
+  bool thinking();
+  void setThinking(bool t);
 signals:
   void disconnected();
   void kicked();
@@ -49,7 +52,9 @@ private:
   Router *router;
   Server *server;
   Room *room;       // Room that player is in, maybe lobby
-  bool m_busy;
+  bool m_busy; // (Lua专用) 是否有doRequest没处理完？见于神貂蝉这种一控多的
+  bool m_thinking; // 是否在烧条？
+  QMutex m_thinking_mutex; // 注意setBusy只在Lua使用，所以不需要锁。
 
   QString requestCommand;
   QString requestData;
diff --git a/src/swig/freekill-nogui.i b/src/swig/freekill-nogui.i
index 06dff76c..d0f647b4 100644
--- a/src/swig/freekill-nogui.i
+++ b/src/swig/freekill-nogui.i
@@ -7,6 +7,7 @@
 #include "serverplayer.h"
 #include "clientplayer.h"
 #include "room.h"
+#include "roomthread.h"
 #include "util.h"
 #include "qmlbackend.h"
 class ClientPlayer *Self = nullptr;
@@ -17,4 +18,3 @@ class ClientPlayer *Self = nullptr;
 %include "qml-nogui.i"
 %include "player.i"
 %include "server.i"
-%include "sqlite3.i"
diff --git a/src/swig/freekill.i b/src/swig/freekill.i
index e8c4dd12..4b9521a5 100644
--- a/src/swig/freekill.i
+++ b/src/swig/freekill.i
@@ -8,6 +8,7 @@
 #include "serverplayer.h"
 #include "clientplayer.h"
 #include "room.h"
+#include "roomthread.h"
 #include "qmlbackend.h"
 #include "util.h"
 %}
@@ -17,4 +18,3 @@
 %include "player.i"
 %include "client.i"
 %include "server.i"
-%include "sqlite3.i"
diff --git a/src/swig/player.i b/src/swig/player.i
index 8dae1942..85c9cbbb 100644
--- a/src/swig/player.i
+++ b/src/swig/player.i
@@ -8,6 +8,8 @@ public:
     Invalid,
     Online,
     Trust,
+    Run,
+    Robot,  // only for real robot
     Offline
   };
 
@@ -21,12 +23,7 @@ public:
   void setAvatar(const QString &avatar);
 
   State getState() const;
-  QString getStateString() const;
   void setState(State state);
-  void setStateString(const QString &state);
-
-  bool isReady() const;
-  void setReady(bool ready);
 };
 
 %nodefaultctor ClientPlayer;
diff --git a/src/swig/server.i b/src/swig/server.i
index 00ef7659..f698add1 100644
--- a/src/swig/server.i
+++ b/src/swig/server.i
@@ -1,63 +1,22 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-%nodefaultctor Server;
-%nodefaultdtor Server;
-class Server : public QObject {
-public:
-  Room *lobby() const;
-  void createRoom(ServerPlayer *owner, const QString &name, int capacity);
-  Room *findRoom(int id) const;
-  ServerPlayer *findPlayer(int id) const;
-
-  sqlite3 *getDatabase();
-};
-
-extern Server *ServerInstance;
-
 %nodefaultctor Room;
 %nodefaultdtor Room;
-class Room : public QThread {
+class Room : public QObject {
 public:
   // Property reader & setter
   // ==================================={
-  Server *getServer() const;
   int getId() const;
-  bool isLobby() const;
-  QString getName() const;
-  void setName(const QString &name);
-  int getCapacity() const;
-  void setCapacity(int capacity);
-  bool isFull() const;
-  bool isAbandoned() const;
 
-  ServerPlayer *getOwner() const;
-  void setOwner(ServerPlayer *owner);
-
-  void addPlayer(ServerPlayer *player);
-  void addRobot(ServerPlayer *player);
-  void removePlayer(ServerPlayer *player);
   QList<ServerPlayer *> getPlayers() const;
-  ServerPlayer *findPlayer(int id) const;
 
   QList<ServerPlayer *> getObservers() const;
   int getTimeout() const;
-
-  bool isStarted() const;
-  // ====================================}
-
-  void doBroadcastNotify(
-    const QList<ServerPlayer *> targets,
-    const QString &command,
-    const QString &jsonData
-  );
+  void checkAbandoned();
 
   void updateWinRate(int id, const QString &general, const QString &mode,
                      int result);
   void gameOver();
-
-  LuaFunction startGame;
-  QString fetchRequest();
-  bool hasRequest() const;
 };
 
 %extend Room {
@@ -66,14 +25,28 @@ public:
   }
 }
 
+%nodefaultctor RoomThread;
+%nodefaultdtor RoomThread;
+class RoomThread : public QThread {
+public:
+  Room *getRoom(int id);
+
+  QString fetchRequest();
+  void clearRequest();
+  bool hasRequest();
+
+  void trySleep(int ms);
+  bool isTerminated() const;
+};
+
 %{
-void Room::initLua()
+void RoomThread::run()
 {
   lua_getglobal(L, "debug");
   lua_getfield(L, -1, "traceback");
   lua_replace(L, -2);
-  lua_getglobal(L, "CreateRoom");
-  SWIG_NewPointerObj(L, this, SWIGTYPE_p_Room, 0);
+  lua_getglobal(L, "InitScheduler");
+  SWIG_NewPointerObj(L, this, SWIGTYPE_p_RoomThread, 0);
   int error = lua_pcall(L, 1, 0, -2);
   lua_pop(L, 1);
   if (error) {
@@ -81,46 +54,20 @@ void Room::initLua()
     qCritical() << error_msg;
   }
 }
-
-void Room::roomStart() {
-  Q_ASSERT(startGame);
-
-  lua_getglobal(L, "debug");
-  lua_getfield(L, -1, "traceback");
-  lua_replace(L, -2);
-
-  lua_rawgeti(L, LUA_REGISTRYINDEX, startGame);
-  SWIG_NewPointerObj(L, this, SWIGTYPE_p_Room, 0);
-
-  int error = lua_pcall(L, 1, 0, -3);
-
-  if (error) {
-    const char *error_msg = lua_tostring(L, -1);
-    qCritical() << error_msg;
-    lua_pop(L, 2);
-  }
-  lua_pop(L, 1);
-}
-
 %}
 
 %nodefaultctor ServerPlayer;
 %nodefaultdtor ServerPlayer;
 class ServerPlayer : public Player {
 public:
-  Server *getServer() const;
-  Room *getRoom() const;
-  void setRoom(Room *room);
-
-  void speak(const QString &message);
-
   void doRequest(const QString &command,
            const QString &json_data, int timeout);
   QString waitForReply(int timeout);
   void doNotify(const QString &command, const QString &json_data);
 
-  void prepareForRequest(const QString &command, const QString &data);
-
   bool busy() const;
   void setBusy(bool busy);
+
+  bool thinking();
+  void setThinking(bool t);
 };
diff --git a/src/swig/sqlite3.i b/src/swig/sqlite3.i
deleted file mode 100644
index 435a18fb..00000000
--- a/src/swig/sqlite3.i
+++ /dev/null
@@ -1,8 +0,0 @@
-// SPDX-License-Identifier: GPL-3.0-or-later
-
-struct sqlite3;
-
-sqlite3 *OpenDatabase(const QString &filename);
-QString SelectFromDb(sqlite3 *db, const QString &sql);
-void ExecSQL(sqlite3 *db, const QString &sql);
-void CloseDatabase(sqlite3 *db);