diff --git a/lua/fk_ex.lua b/lua/fk_ex.lua
index 064e4831..d7f5cf95 100644
--- a/lua/fk_ex.lua
+++ b/lua/fk_ex.lua
@@ -236,7 +236,6 @@ end
 ---@return ProhibitSkill
 function fk.CreateProhibitSkill(spec)
   assert(type(spec.name) == "string")
-  assert(type(spec.is_prohibited) == "function")
 
   local skill = ProhibitSkill:new(spec.name)
   readStatusSpecToSkill(skill, spec)
diff --git a/lua/server/room.lua b/lua/server/room.lua
index 9b4515eb..01cd7b10 100644
--- a/lua/server/room.lua
+++ b/lua/server/room.lua
@@ -509,6 +509,7 @@ function Room:doRaceRequest(command, players, jsonData)
       return nil
     end
 
+    coroutine.yield("__handleRequest", remainTime - elapsed)
     fk.QThread_msleep(10)
   end
 end
@@ -520,13 +521,11 @@ function Room:requestLoop(rest_time)
     local observee = self.players[1]
     player:doNotify("Setup", json.encode{
       observee.id,
-      player:getScreenName(),
-      player:getAvatar(),
+      observee.serverplayer:getScreenName(),
+      observee.serverplayer:getAvatar(),
     })
     player:doNotify("EnterRoom", json.encode{
-      #self.players, self.timeout,
-      -- FIXME: use real room settings here
-      { enableFreeAssign = false }
+      #self.players, self.timeout, self.settings
     })
 
     -- send player data
diff --git a/lua/server/serverplayer.lua b/lua/server/serverplayer.lua
index fc57c507..df1b7383 100644
--- a/lua/server/serverplayer.lua
+++ b/lua/server/serverplayer.lua
@@ -142,6 +142,7 @@ function ServerPlayer:marshal(player)
   room:notifyProperty(player, self, "maxHp")
   room:notifyProperty(player, self, "hp")
   room:notifyProperty(player, self, "gender")
+  room:notifyProperty(player, self, "kingdom")
 
   if self.kingdom ~= Fk.generals[self.general].kingdom then
     self.kingdom = Fk.generals[self.general].kingdom
diff --git a/packages/standard/aux_skills.lua b/packages/standard/aux_skills.lua
index cda4bbb2..52845cfa 100644
--- a/packages/standard/aux_skills.lua
+++ b/packages/standard/aux_skills.lua
@@ -21,7 +21,7 @@ local discardSkill = fk.CreateActiveSkill{
       checkpoint = checkpoint and (Fk:currentRoom():getCardArea(to_select) ~= Player.Equip)
     end
 
-    if self.pattern ~= "" then
+    if self.pattern and self.pattern ~= "" then
       checkpoint = checkpoint and (Exppattern:Parse(self.pattern):match(card))
     end
     return checkpoint
@@ -33,7 +33,23 @@ local discardSkill = fk.CreateActiveSkill{
 local chooseCardsSkill = fk.CreateActiveSkill{
   name = "choose_cards_skill",
   expand_pile = function(self) return self.expand_pile end,
-  card_filter = discardSkill.cardFilter,
+  card_filter = function(self, to_select, selected)
+    if #selected >= self.num then
+      return false
+    end
+
+    local checkpoint = true
+    local card = Fk:getCardById(to_select)
+
+    if not self.include_equip then
+      checkpoint = checkpoint and (Fk:currentRoom():getCardArea(to_select) ~= Player.Equip)
+    end
+
+    if self.pattern and self.pattern ~= "" then
+      checkpoint = checkpoint and (Exppattern:Parse(self.pattern):match(card))
+    end
+    return checkpoint
+  end,
   min_card_num = function(self) return self.min_num end,
   max_card_num = function(self) return self.num end,
 }
diff --git a/packages/standard/init.lua b/packages/standard/init.lua
index c760e6ed..aa3ed383 100644
--- a/packages/standard/init.lua
+++ b/packages/standard/init.lua
@@ -682,7 +682,8 @@ local liuli = fk.CreateTriggerSkill{
   on_cost = function(self, event, target, player, data)
     local room = player.room
     local prompt = "#liuli-target"
-    local plist, cid = room:askForChooseCardAndPlayers(player, self.target_list, 1, 1, nil, prompt, self.name)
+    local plist, cid = room:askForChooseCardAndPlayers(player,
+                          self.target_list, 1, 1, nil, prompt, self.name, true)
     if #plist > 0 then
       self.cost_data = {plist[1], cid}
       return true
diff --git a/packages/standard_cards/init.lua b/packages/standard_cards/init.lua
index 3ceacc32..52e41b70 100644
--- a/packages/standard_cards/init.lua
+++ b/packages/standard_cards/init.lua
@@ -206,11 +206,12 @@ local snatchSkill = fk.CreateActiveSkill{
   end,
   target_num = 1,
   on_effect = function(self, room, effect)
-    local to = effect.to
+    local to = room:getPlayerById(effect.to)
     local from = effect.from
+    if to:isAllNude() then return end
     local cid = room:askForCardChosen(
       room:getPlayerById(from),
-      room:getPlayerById(to),
+      to,
       "hej",
       self.name
     )
@@ -335,15 +336,17 @@ local collateralSkill = fk.CreateActiveSkill{
     cardUseEvent.tos = { { cardUseEvent.tos[1][1], cardUseEvent.tos[2][1] } }
   end,
   on_effect = function(self, room, effect)
-    local use = room:askForUseCard(
-      room:getPlayerById(effect.to),
-      "slash", nil, nil, nil, { must_targets = effect.subTargets }
-    )
+    local to = room:getPlayerById(effect.to)
+    if not to:getEquipment(Card.SubtypeWeapon) then return end
+    local use = room:askForUseCard(to, "slash", nil, nil, nil,
+                                   { must_targets = effect.subTargets })
 
     if use then
       room:useCard(use)
     else
-      room:obtainCard(effect.from, room:getPlayerById(effect.to):getEquipment(Card.SubtypeWeapon), true, fk.ReasonGive)
+      room:obtainCard(effect.from,
+        room:getPlayerById(effect.to):getEquipment(Card.SubtypeWeapon),
+        true, fk.ReasonGive)
     end
   end
 }
@@ -973,6 +976,14 @@ extension:addCards({
   spear,
 })
 
+local axeProhibit = fk.CreateProhibitSkill{
+  name = "#axe_prohibit",
+  prohibit_discard = function(self, player, card)
+    return player:hasSkill(self.name) and card.name == "axe" and
+      Fk.currentResponseReason == "#axe_skill" and
+      Fk:currentRoom():getCardArea(card.id) == Player.Equip
+  end,
+}
 local axeSkill = fk.CreateTriggerSkill{
   name = "#axe_skill",
   attached_equip = "axe",
@@ -989,6 +1000,7 @@ local axeSkill = fk.CreateTriggerSkill{
   end,
   on_use = function() return true end,
 }
+axeSkill:addRelatedSkill(axeProhibit)
 Fk:addSkill(axeSkill)
 local axe = fk.CreateWeapon{
   name = "axe",
diff --git a/qml/Pages/Lobby.qml b/qml/Pages/Lobby.qml
index a9305a54..424c6cf4 100644
--- a/qml/Pages/Lobby.qml
+++ b/qml/Pages/Lobby.qml
@@ -57,7 +57,6 @@ Item {
 
         Text {
           text: Backend.translate("Observe")
-          visible: false // FIXME
           font.pixelSize: 24
           TapHandler {
             onTapped: {
diff --git a/src/server/room.cpp b/src/server/room.cpp
index fcf7cca6..0b40a3f3 100644
--- a/src/server/room.cpp
+++ b/src/server/room.cpp
@@ -102,7 +102,8 @@ void Room::addPlayer(ServerPlayer *player) {
     if (runned_players.contains(player->getId())) {
       player->doNotify("ErrorMsg", "Running away is shameful.");
     }
-    // FIXME: add to lobby again
+    // 此时player仍在lobby中，别管就行了
+    // emit playerRemoved(player);
     return;
   }
 
@@ -166,8 +167,6 @@ void Room::addRobot(ServerPlayer *player) {
 
 void Room::removePlayer(ServerPlayer *player) {
   // 如果是旁观者的话，就清旁观者
-  // FIXME: 游戏结束后，旁观者若退出房间，则不会调用此处，遂导致bug(大厅加人)
-  // FIXME: 考虑一下把gameOver处的observers.clear()去掉
   if (observers.contains(player)) {
     removeObserver(player);
     return;
@@ -247,15 +246,17 @@ void Room::addObserver(ServerPlayer *player) {
 
   // 向observers中追加player，并从大厅移除player，然后将player的room设为this
   observers.append(player);
-  server->lobby()->removePlayer(player);
   player->setRoom(this);
+  emit playerAdded(player);
   pushRequest(QString("%1,observe").arg(player->getId()));
 }
 
 void Room::removeObserver(ServerPlayer *player) {
-  // FIXME: 判断一下有没有
-  observers.removeOne(player);
-  server->lobby()->addPlayer(player);
+  if (observers.contains(player)) {
+    observers.removeOne(player);
+  }
+  emit playerRemoved(player);
+
   if (player->getState() == Player::Online) {
     QJsonArray arr;
     arr << player->getId();
@@ -263,8 +264,6 @@ void Room::removeObserver(ServerPlayer *player) {
     arr << player->getAvatar();
     player->doNotify("Setup", JsonArray2Bytes(arr));
   }
-  // FIXME: 游戏结束后就别加request了，Lua已经没了
-  // FIXME: 但是按理说这东西在Lua没了之后/Lua创建时应该自动清空才对啊
   pushRequest(QString("%1,leave").arg(player->getId()));
 }
 
@@ -307,12 +306,15 @@ void Room::gameOver() {
       p->deleteLater();
     }
   }
-  observers.clear();
+  // 旁观者不能在这清除，因为removePlayer逻辑不一样
+  // observers.clear();
   players.clear();
+  clearRequest();
   owner = nullptr;
 }
 
 QString Room::fetchRequest() {
+  if (!gameStarted) return "";
   request_queue_mutex.lock();
   QString ret = "";
   if (!request_queue.isEmpty()) {
@@ -323,15 +325,25 @@ QString Room::fetchRequest() {
 }
 
 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();
 }
diff --git a/src/server/room.h b/src/server/room.h
index 27e933f3..f65d5a99 100644
--- a/src/server/room.h
+++ b/src/server/room.h
@@ -61,6 +61,7 @@ class Room : public QThread {
 
   QString fetchRequest();
   void pushRequest(const QString &req);
+  void clearRequest();
   bool hasRequest() const;
 
  signals: