diff --git a/server/gameserver/human.cc b/server/gameserver/human.cc
index 51d45e53..ab2dcea0 100644
--- a/server/gameserver/human.cc
+++ b/server/gameserver/human.cc
@@ -3432,6 +3432,8 @@ void Human::ProcBlueStoneItem(AddItemDTO& dto)
         ((Loot*)entity)->count -= add_num;
     }
     SyncVolume(IS_BLUE_STONE);
+    MarkSyncActivePlayer(__FILE__, __LINE__, __func__);
+    SyncAroundPlayers(__FILE__, __LINE__, __func__);
     dto.handled = true;
 }
 
diff --git a/server/gameserver/mt/Param.h b/server/gameserver/mt/Param.h
index ea3223d5..1bbd1cd3 100644
--- a/server/gameserver/mt/Param.h
+++ b/server/gameserver/mt/Param.h
@@ -102,6 +102,10 @@ namespace mt
         float sand_table_move_speed = 500;
         float wait_cloud_time = 3;
 
+        std::vector<float> robot_placement;
+        int robot_placement_time = 360;
+        std::vector<float> robot_placement_type;
+
     };
     static void StaticPostInit();
     static const S& s() { return s_; };
diff --git a/server/gameserver/room.cc b/server/gameserver/room.cc
index ec0632e9..9d5e7305 100644
--- a/server/gameserver/room.cc
+++ b/server/gameserver/room.cc
@@ -528,6 +528,7 @@ void Room::DropItemEx(const glm::vec3& born_pos, const glm::vec3& pos, int item_
     if (item_id == mt::Equip::YELLOW_STONE_ID && group_num <= 0) {
         group_num = 1;
     }
+    group_num = std::max(group_num, 1);
     if (equip_meta && group_num > 0 && item_count > 0) {
 #if 1
         if (equip_meta->equip_type() == EQUIP_TYPE_BULLET) {
diff --git a/server/gameserver/skill.cc b/server/gameserver/skill.cc
index 9a44ff43..72f93078 100644
--- a/server/gameserver/skill.cc
+++ b/server/gameserver/skill.cc
@@ -502,7 +502,6 @@ bool Skill::IsMainSkill()
 void Skill::Active()
 {
     actived_ = true;
-    NotifySkillState();
 }
 
 void Skill::Clear()
@@ -526,7 +525,6 @@ void Skill::LevelUp()
                     meta = mt::Skill::GetById(new_skill_meta->skill_id() + skill_lv);
                 }
                 level_ = skill_lv;
-                NotifySkillState();
             }
             std::set<int>* buffs = merge_item_meta->GetBuffs(owner->GetInventory(IS_BLUE_STONE));
             if (buffs) {