diff --git a/server/gameserver/ability.cc b/server/gameserver/ability.cc
index 1b830d37..e40968c3 100644
--- a/server/gameserver/ability.cc
+++ b/server/gameserver/ability.cc
@@ -1,10 +1,12 @@
 #include "precompile.h"
 
 #include "ability.h"
-#include "metamgr.h"
 #include "buff.h"
 #include "creature.h"
 
+#include "mt/Equip.h"
+#include "mt/Buff.h"
+
 float Ability::GetAttrAbs(int attr_id)
 {
     float attr_abs_val = GetBuffAttrAbs(attr_id);
@@ -12,17 +14,17 @@ float Ability::GetAttrAbs(int attr_id)
         if (owner.Get()) {
             Buff* buff = owner.Get()->GetBuffByEffectId(kBET_Car);
             if (buff) {
-                MetaData::Equip* equip_meta = MetaMgr::Instance()->GetEquip(buff->meta->param4);
+                const mt::Equip* equip_meta = mt::Equip::GetById(buff->meta->_param4);
                 if (equip_meta) {
                     switch (attr_id) {
                     case kHAT_Atk:
                         {
-                            attr_abs_val += equip_meta->pb->atk();
+                            attr_abs_val += equip_meta->atk();
                         }
                         break;
                     case kHAT_Def:
                         {
-                            attr_abs_val += equip_meta->pb->def();
+                            attr_abs_val += equip_meta->def();
                         }
                         break;
                     default:
diff --git a/server/gameserver/android.cc b/server/gameserver/android.cc
index 73e3730c..745a474b 100644
--- a/server/gameserver/android.cc
+++ b/server/gameserver/android.cc
@@ -1,7 +1,6 @@
 #include "precompile.h"
 
 #include "android.h"
-#include "metamgr.h"
 #include "room.h"
 #include "app.h"
 #include "android_agent.h"
@@ -9,6 +8,9 @@
 
 #include "f8/btmgr.h"
 
+#include "mt/Equip.h"
+#include "mt/Robot.h"
+
 Android::Android():Human()
 {
     #if 0
@@ -110,17 +112,17 @@ void Android::InternalUpdate(int delta_time)
 
 void Android::GiveEquip()
 {
-    MetaData::Equip* weapon_meta = MetaMgr::Instance()->GetEquip(robot_meta->pb->weapon_id());
+    const mt::Equip* weapon_meta = mt::Equip::GetById(robot_meta->weapon_id());
     if (weapon_meta) {
         Weapon& weapon = weapons[GUN_SLOT1];
         weapon.weapon_idx = GUN_SLOT1;
-        weapon.weapon_id = weapon_meta->pb->id();
+        weapon.weapon_id = weapon_meta->id();
         weapon.ammo = 0;
         weapon.meta = weapon_meta;
         weapon.Recalc();
         SetCurrWeapon(&weapon);
     }
-    sex = robot_meta->pb->sex();
+    sex = robot_meta->sex();
     if (sex == 0) {
         sex = rand() % 3;
     }
@@ -128,9 +130,9 @@ void Android::GiveEquip()
 
 void Android::RandSkin()
 {
-    if (!robot_meta->skin_id.empty()) {
+    if (!robot_meta->_skin_id.empty()) {
         Skin& skin = skins[0];
-        skin.skin_id = 1 + (robot_meta->pb->id() % 3);
+        skin.skin_id = 1 + (robot_meta->id() % 3);
         skin.skin_lv = 1;
     }
 }
diff --git a/server/gameserver/android.h b/server/gameserver/android.h
index ce565289..923fa81c 100644
--- a/server/gameserver/android.h
+++ b/server/gameserver/android.h
@@ -2,16 +2,11 @@
 
 #include "human.h"
 
-namespace MetaData
-{
-    class Robot;
-}
-
 class AndroidAgent;
 class Android : public Human
 {
  public:
-    MetaData::Robot* robot_meta = nullptr;
+    const mt::Robot* robot_meta = nullptr;
 
     virtual ~Android() override;
     virtual void Initialize() override;
diff --git a/server/gameserver/app.cc b/server/gameserver/app.cc
index 1de1303d..b78c22e3 100644
--- a/server/gameserver/app.cc
+++ b/server/gameserver/app.cc
@@ -16,7 +16,6 @@
 #include "app.h"
 #include "jsondatamgr.h"
 #include "handlermgr.h"
-#include "metamgr.h"
 #include "roommgr.h"
 #include "player.h"
 #include "playermgr.h"
@@ -204,7 +203,6 @@ bool App::Init(int argc, char* argv[])
 #endif
     SkillHelper::Init();
     JsonDataMgr::Instance()->Init();
-    MetaMgr::Instance()->Init();
     mt::MetaMgr::Instance()->Init();
     EntityFactory::Instance()->Init();
     uuid.SetMachineId((node_id - 1) * MAX_NODE_ID + instance_id);
@@ -260,7 +258,6 @@ void App::UnInit()
     KillMgr::Instance()->UnInit();
     EntityFactory::Instance()->UnInit();
     mt::MetaMgr::Instance()->UnInit();
-    MetaMgr::Instance()->UnInit();
     JsonDataMgr::Instance()->UnInit();
     f8::BtMgr::Instance()->UnInit();
     f8::HttpClientPool::Instance()->UnInit();
diff --git a/server/gameserver/battledatacontext.cc b/server/gameserver/battledatacontext.cc
index c4dd87c2..e3558e12 100644
--- a/server/gameserver/battledatacontext.cc
+++ b/server/gameserver/battledatacontext.cc
@@ -5,7 +5,6 @@
 #include "battledatacontext.h"
 
 #include "human.h"
-#include "metamgr.h"
 #include "creature.h"
 #include "types.h"
 #include "bullet.h"
@@ -15,6 +14,13 @@
 #include "roommgr.h"
 #include "mt/Param.h"
 #include "mt/Hero.h"
+#include "mt/HeroQuality.h"
+#include "mt/NpcStandard.h"
+#include "mt/PveGemini.h"
+#include "mt/PveGeminiContent.h"
+#include "mt/Equip.h"
+#include "mt/Skill.h"
+#include "mt/FormulaPvp.h"
 
 #include "attrhelper.h"
 
@@ -89,13 +95,13 @@ private:
         dodge_ = hero_meta->miss();
         dodge_damage_ruduce_ = hero_meta->miss_damage_ruduce();
         if (c->room->pve_instance) {
-            MetaData::NpcStandard* standard_meta = MetaMgr::Instance()->GetNpcStandard
-                (c->room->pve_instance->pb->gemini_lv());
+            const mt::NpcStandard* standard_meta = mt::NpcStandard::GetById
+                (c->room->pve_instance->gemini_lv());
             if (standard_meta) {
-                hp_ = standard_meta->pb->hp() * hero_meta->hp_ratio() *
+                hp_ = standard_meta->hp() * hero_meta->hp_ratio() *
                     c->room->pve_instance->GetHpMul(c->room->GetHumanNum());
-                atk_ = standard_meta->pb->damage() * hero_meta->damage_ratio();
-                def_ = standard_meta->pb->defence() * hero_meta->defence_ratio();
+                atk_ = standard_meta->damage() * hero_meta->damage_ratio();
+                def_ = standard_meta->defence() * hero_meta->defence_ratio();
             } else {
 #ifdef DEBUG
                 abort();
@@ -198,7 +204,7 @@ class WeaponAbility
 {
 public:
     long long weapon_uniid = 0;
-    MetaData::Equip* weapon_meta =  nullptr;
+    const mt::Equip* weapon_meta =  nullptr;
     std::shared_ptr<a8::XObject> weapon_dto;
 
     float GetAtk()
@@ -244,12 +250,12 @@ private:
 
     void DefaultInit(Creature* c)
     {
-        atk_ = weapon_meta->pb->atk();
-        crit_atk_ = weapon_meta->pb->critical();
-        crit_atk_ratio_ = weapon_meta->pb->cri_damage();
-        clip_volume_ = weapon_meta->pb->clip_volume();
-        fire_rate_ = weapon_meta->pb->fire_rate();
-        reload_time_ = weapon_meta->pb->reload_time();
+        atk_ = weapon_meta->atk();
+        crit_atk_ = weapon_meta->critical();
+        crit_atk_ratio_ = weapon_meta->cri_damage();
+        clip_volume_ = weapon_meta->clip_volume();
+        fire_rate_ = weapon_meta->fire_rate();
+        reload_time_ = weapon_meta->reload_time();
     }
 
     void DtoInit(Creature* c)
@@ -355,7 +361,7 @@ void BattleDataContext::ParseResult(a8::XObject& obj)
     }
     if (obj.HasKey("weapon_dto1") && obj.At("weapon_dto1")->IsObject()) {
         weapon_dto1 = obj.At("weapon_dto1");
-        MetaData::Equip* meta = MetaMgr::Instance()->GetEquip(weapon_dto1->Get("gun_id", 0));
+        const mt::Equip* meta = mt::Equip::GetById(weapon_dto1->Get("gun_id", 0));
         if (meta) {
             weapon1_ability_ = std::make_shared<WeaponAbility>();
             weapon1_ability_->weapon_uniid = weapon_dto1->Get("gun_uniid", 0);
@@ -365,7 +371,7 @@ void BattleDataContext::ParseResult(a8::XObject& obj)
     }
     if (obj.HasKey("weapon_dto2") && obj.At("weapon_dto2")->IsObject()) {
         weapon_dto2 = obj.At("weapon_dto2");
-        MetaData::Equip* meta = MetaMgr::Instance()->GetEquip(weapon_dto2->Get("gun_id", 0));
+        const mt::Equip* meta = mt::Equip::GetById(weapon_dto2->Get("gun_id", 0));
         if (meta) {
             weapon2_ability_ = std::make_shared<WeaponAbility>();
             weapon2_ability_->weapon_uniid = weapon_dto2->Get("gun_uniid", 0);
@@ -411,7 +417,7 @@ void BattleDataContext::CalcBattleStat(struct PlayerStats* stats)
     auto CalcHeroPvpCeg =
         [] (long long ceg_uplimit, struct PlayerStats* stats) -> long long
         {
-            MetaData::FormulaPvp* meta = MetaMgr::Instance()->GetFormulaPvp(stats->ranked_topx);
+            const mt::FormulaPvp* meta = mt::FormulaPvp::GetById(stats->ranked_topx);
             if (!meta) {
                 return 0;
             }
@@ -419,11 +425,11 @@ void BattleDataContext::CalcBattleStat(struct PlayerStats* stats)
                 (
                  ceg_uplimit *
                  (
-                  (0.5 * stats->ranked_topx * meta->pb->ranked_topx()) +
-                  (0.25 * stats->kills_topx * meta->pb->kills_topx()) +
-                  (0.15 * stats->hero_topx * meta->pb->hero_topx()) +
-                  (0.5 * stats->weapon_topx * meta->pb->weapon_topx()) +
-                  (0.5 * stats->survival_topx * meta->pb->survival_topx())
+                  (0.5 * stats->ranked_topx * meta->ranked_topx()) +
+                  (0.25 * stats->kills_topx * meta->kills_topx()) +
+                  (0.15 * stats->hero_topx * meta->hero_topx()) +
+                  (0.5 * stats->weapon_topx * meta->weapon_topx()) +
+                  (0.5 * stats->survival_topx * meta->survival_topx())
                   )
                  );
             return ceg;
@@ -431,7 +437,7 @@ void BattleDataContext::CalcBattleStat(struct PlayerStats* stats)
     auto CalcWeaponPvpCeg =
         [] (long long ceg_uplimit, struct PlayerStats* stats) -> long long
         {
-            MetaData::FormulaPvp* meta = MetaMgr::Instance()->GetFormulaPvp(stats->ranked_topx);
+            const mt::FormulaPvp* meta = mt::FormulaPvp::GetById(stats->ranked_topx);
             if (!meta) {
                 return 0;
             }
@@ -439,11 +445,11 @@ void BattleDataContext::CalcBattleStat(struct PlayerStats* stats)
                 (
                  ceg_uplimit *
                  (
-                  (0.5 * stats->ranked_topx * meta->pb->ranked_topx()) +
-                  (0.25 * stats->kills_topx * meta->pb->kills_topx()) +
-                  (0.15 * stats->hero_topx * meta->pb->hero_topx()) +
-                  (0.5 * stats->weapon_topx * meta->pb->weapon_topx()) +
-                  (0.5 * stats->survival_topx * meta->pb->survival_topx())
+                  (0.5 * stats->ranked_topx * meta->ranked_topx()) +
+                  (0.25 * stats->kills_topx * meta->kills_topx()) +
+                  (0.15 * stats->hero_topx * meta->hero_topx()) +
+                  (0.5 * stats->weapon_topx * meta->weapon_topx()) +
+                  (0.5 * stats->survival_topx * meta->survival_topx())
                   )
                  );
             return ceg;
@@ -454,7 +460,7 @@ void BattleDataContext::CalcBattleStat(struct PlayerStats* stats)
         int quality = hero_dto->Get("quality", 0).GetInt();
         int today_get_gold = hero_dto->Get("today_get_gold", 0).GetInt();
         const mt::Hero* hero_meta = mt::Hero::GetById(hero_id);
-        MetaData::HeroQuality* quality_meta = MetaMgr::Instance()->GetHeroQuality(quality);
+        const mt::HeroQuality* quality_meta = mt::HeroQuality::GetById(quality);
 
         stats->pb_hero_stats.set_hero_uniid(a8::XValue(hero_ability_->hero_uniid_).GetString());
         stats->pb_hero_stats.set_hero_id(hero_id);
@@ -482,14 +488,14 @@ void BattleDataContext::CalcBattleStat(struct PlayerStats* stats)
         int gun_id = weapon_dto->Get("gun_id", 0).GetInt();
         int quality = weapon_dto->Get("quality", 0).GetInt();
         int today_get_gold = weapon_dto->Get("today_get_gold", 0).GetInt();
-        MetaData::Item* item_meta = MetaMgr::Instance()->GetItem(gun_id);
-        MetaData::GunQuality* quality_meta = MetaMgr::Instance()->GetGunQuality(quality);
+        const mt::Item* item_meta = MetaMgr::Instance()->GetItem(gun_id);
+        const mt::GunQuality* quality_meta = MetaMgr::Instance()->GetGunQuality(quality);
 
 
         auto p = stats->pb_weapons_stats.Add();
         p->set_weapon_uniid(gun_uniid);
         p->set_weapon_id(gun_id);
-        p->set_weapon_name(item_meta ? item_meta->pb->name() : "");
+        p->set_weapon_name(item_meta ? item_meta->name() : "");
         if (quality_meta) {
             int up_limit = quality_meta->GetPvpCegUpLimit();
             int ceg = CalcWeaponPvpCeg(up_limit, stats);
@@ -639,7 +645,7 @@ float BattleDataContext::GetWeaponAtk(IBullet* bullet)
             break;
         }
     }
-    return bullet->GetGunMeta()->pb->atk();
+    return bullet->GetGunMeta()->atk();
 }
 
 bool BattleDataContext::IsCrit(IBullet* bullet)
@@ -679,9 +685,9 @@ std::shared_ptr<WeaponAbility> BattleDataContext::GetWeaponByUniId(long long wea
 void BattleDataContext::ForceInit(long long hero_uniid,
                                   const mt::Hero* hum_meta,
                                   long long weapon1_uniid,
-                                  MetaData::Equip* weapon1_meta,
+                                  const mt::Equip* weapon1_meta,
                                   long long weapon2_uniid,
-                                  MetaData::Equip* weapon2_meta)
+                                  const mt::Equip* weapon2_meta)
 {
     hero_ability_->hero_uniid_ = hero_uniid;
     hero_ability_->hero_meta = hum_meta;
@@ -717,26 +723,26 @@ void BattleDataContext::GetSkillList(std::vector<int>& skill_list)
     int hero_lv = 1;
     int quality = 1;
     GetHeroLvQuality(hero_lv, quality);
-    MetaData::Skill* skill1 = MetaMgr::Instance()->GetSkill(hero_ability_->hero_meta->skill1list());
-    MetaData::Skill* skill2 = MetaMgr::Instance()->GetSkill(hero_ability_->hero_meta->skill2list());
-    MetaData::Skill* skill3 = MetaMgr::Instance()->GetSkill(hero_ability_->hero_meta->skill3list());
+    const mt::Skill* skill1 = MetaMgr::Instance()->GetSkill(hero_ability_->hero_meta->skill1list());
+    const mt::Skill* skill2 = MetaMgr::Instance()->GetSkill(hero_ability_->hero_meta->skill2list());
+    const mt::Skill* skill3 = MetaMgr::Instance()->GetSkill(hero_ability_->hero_meta->skill3list());
     if (skill1 && skill2 && skill3 && skill1_lv > 0 && skill2_lv > 0 && skill3_lv > 0) {
-        if (MetaMgr::Instance()->GetSkill(skill1->pb->skill_id() + skill1_lv - 1)) {
-            skill_list.push_back(skill1->pb->skill_id() + skill1_lv - 1);
+        if (MetaMgr::Instance()->GetSkill(skill1->skill_id() + skill1_lv - 1)) {
+            skill_list.push_back(skill1->skill_id() + skill1_lv - 1);
         } else {
-            skill_list.push_back(skill1->pb->skill_id());
+            skill_list.push_back(skill1->skill_id());
         }
 
-        if (MetaMgr::Instance()->GetSkill(skill2->pb->skill_id() + skill2_lv - 2)) {
-            skill_list.push_back(skill2->pb->skill_id() + skill2_lv - 2);
+        if (MetaMgr::Instance()->GetSkill(skill2->skill_id() + skill2_lv - 2)) {
+            skill_list.push_back(skill2->skill_id() + skill2_lv - 2);
         } else {
-            skill_list.push_back(skill2->pb->skill_id());
+            skill_list.push_back(skill2->skill_id());
         }
 
-        if (MetaMgr::Instance()->GetSkill(skill3->pb->skill_id() + skill3_lv - 3)) {
-            skill_list.push_back(skill3->pb->skill_id() + skill3_lv - 3);
+        if (MetaMgr::Instance()->GetSkill(skill3->skill_id() + skill3_lv - 3)) {
+            skill_list.push_back(skill3->skill_id() + skill3_lv - 3);
         } else {
-            skill_list.push_back(skill3->pb->skill_id());
+            skill_list.push_back(skill3->skill_id());
         }
 
     }
@@ -759,7 +765,7 @@ int BattleDataContext::GetClipVolume(Creature* c, Weapon* weapon)
         return 0;
     }
     auto p = GetWeaponByUniId(weapon->weapon_uniid);
-    return p ? p->GetClipVolume() : weapon->meta->pb->clip_volume();
+    return p ? p->GetClipVolume() : weapon->meta->clip_volume();
 }
 
 int BattleDataContext::GetFireRate(Creature* c, Weapon* weapon)
@@ -768,7 +774,7 @@ int BattleDataContext::GetFireRate(Creature* c, Weapon* weapon)
         return 0;
     }
     auto p = GetWeaponByUniId(weapon->weapon_uniid);
-    return p ? p->GetFireRate() : weapon->meta->pb->fire_rate();
+    return p ? p->GetFireRate() : weapon->meta->fire_rate();
 }
 
 int BattleDataContext::GetReloadTime(Creature* c, Weapon* weapon)
@@ -777,7 +783,7 @@ int BattleDataContext::GetReloadTime(Creature* c, Weapon* weapon)
         return 0;
     }
     auto p = GetWeaponByUniId(weapon->weapon_uniid);
-    return p ? p->GetReloadTime() : weapon->meta->pb->reload_time();
+    return p ? p->GetReloadTime() : weapon->meta->reload_time();
 }
 
 float BattleDataContext::GetExtRecoverHp()
diff --git a/server/gameserver/battledatacontext.h b/server/gameserver/battledatacontext.h
index c5d44dfe..d9f5df67 100644
--- a/server/gameserver/battledatacontext.h
+++ b/server/gameserver/battledatacontext.h
@@ -62,9 +62,9 @@ struct BattleDataContext
     void ForceInit(long long hero_uniid,
                    const mt::Hero* hum_meta,
                    long long weapon1_uniid,
-                   MetaData::Equip* weapon1_meta,
+                   const mt::Equip* weapon1_meta,
                    long long weapon2_uniid,
-                   MetaData::Equip* weapon2_meta);
+                   const mt::Equip* weapon2_meta);
     void Init(Creature* c);
     void GetSkillList(std::vector<int>& skill_list);
     int GetClipVolume(Creature* c, Weapon* weapon);
diff --git a/server/gameserver/buff.h b/server/gameserver/buff.h
index 86144f98..bb9348c7 100644
--- a/server/gameserver/buff.h
+++ b/server/gameserver/buff.h
@@ -3,16 +3,6 @@
 #include "weakptr.h"
 #include "weapon.h"
 
-namespace MetaData
-{
-    struct Player;
-    struct Equip;
-    struct Dress;
-    struct Skill;
-    struct Tank;
-    struct Buff;
-}
-
 namespace cs
 {
     class MFBuff;
@@ -33,8 +23,8 @@ class Buff
  public:
     int buff_uniid = 0;
     Creature* owner = nullptr;
-    MetaData::Buff* meta = nullptr;
-    MetaData::Skill* skill_meta = nullptr;
+    const mt::Buff* meta = nullptr;
+    const mt::Skill* skill_meta = nullptr;
     a8::Attacher xtimer_attacher;
     long long add_frameno = 0;
     list_head effect_entry;
diff --git a/server/gameserver/mt/Forward.h b/server/gameserver/mt/Forward.h
index 955a8084..de9bc4e1 100644
--- a/server/gameserver/mt/Forward.h
+++ b/server/gameserver/mt/Forward.h
@@ -5,6 +5,7 @@ namespace mt
     class Param;
     class Hero;
     class Map;
+    class MapThing;
     class Attr;
     class FormulaPvp;
     class GunQuality;
diff --git a/server/gameserver/mt/GunQuality.cc b/server/gameserver/mt/GunQuality.cc
index 39ec0b47..80ba7684 100644
--- a/server/gameserver/mt/GunQuality.cc
+++ b/server/gameserver/mt/GunQuality.cc
@@ -9,7 +9,7 @@ IMPL_TABLE(mt::GunQuality)
 namespace mt
 {
 
-    long long GunQuality::GetPvpCegUpLimit()
+    long long GunQuality::GetPvpCegUpLimit() const
     {
         double sys_param = 0;
         long long up_limit = round
diff --git a/server/gameserver/mt/GunQuality.h b/server/gameserver/mt/GunQuality.h
index 335db6d5..7be7753d 100644
--- a/server/gameserver/mt/GunQuality.h
+++ b/server/gameserver/mt/GunQuality.h
@@ -11,7 +11,7 @@ namespace mt
                      "id")
     public:
 
-        long long GetPvpCegUpLimit();
+        long long GetPvpCegUpLimit() const;
     };
 
 }
diff --git a/server/gameserver/mt/HeroQuality.cc b/server/gameserver/mt/HeroQuality.cc
index d33618fa..519108a0 100644
--- a/server/gameserver/mt/HeroQuality.cc
+++ b/server/gameserver/mt/HeroQuality.cc
@@ -9,7 +9,7 @@ IMPL_TABLE(mt::HeroQuality)
 namespace mt
 {
 
-    long long HeroQuality::GetPvpCegUpLimit()
+    long long HeroQuality::GetPvpCegUpLimit() const
     {
         double sys_param = 0;
         long long up_limit = round
diff --git a/server/gameserver/mt/HeroQuality.h b/server/gameserver/mt/HeroQuality.h
index 33d0b2f5..bfce36b8 100644
--- a/server/gameserver/mt/HeroQuality.h
+++ b/server/gameserver/mt/HeroQuality.h
@@ -11,7 +11,7 @@ namespace mt
                      "id")
     public:
 
-        long long GetPvpCegUpLimit();
+        long long GetPvpCegUpLimit() const;
     };
 
 }
diff --git a/server/gameserver/mt/PveGemini.cc b/server/gameserver/mt/PveGemini.cc
index 266bb3b2..c6612d22 100644
--- a/server/gameserver/mt/PveGemini.cc
+++ b/server/gameserver/mt/PveGemini.cc
@@ -19,7 +19,7 @@ namespace mt
         }
     }
 
-    float PveGemini::GetHpMul(int num)
+    float PveGemini::GetHpMul(int num) const
     {
         if (num > 0 && num <= hp_muls.size()) {
             return hp_muls[num - 1];
diff --git a/server/gameserver/mt/PveGemini.h b/server/gameserver/mt/PveGemini.h
index aa067998..c84a2d4e 100644
--- a/server/gameserver/mt/PveGemini.h
+++ b/server/gameserver/mt/PveGemini.h
@@ -12,7 +12,8 @@ namespace mt
     public:
 
         void Init1();
-        float GetHpMul(int num);
+        float GetHpMul(int num) const;
+
     private:
         std::vector<float> hp_muls;
         std::vector<float> hp_mul;
diff --git a/server/gameserver/mt/Robot.h b/server/gameserver/mt/Robot.h
index 9a1a8e21..f9a0d4d6 100644
--- a/server/gameserver/mt/Robot.h
+++ b/server/gameserver/mt/Robot.h
@@ -13,7 +13,7 @@ namespace mt
 
       void Init1();
       static const mt::Robot* RandRobot(std::set<int>& refreshed_robot_set);
-    private:
+
         std::vector<int> _skin_id;
     };
 
diff --git a/server/gameserver/room.h b/server/gameserver/room.h
index 3328634a..e206b6b6 100644
--- a/server/gameserver/room.h
+++ b/server/gameserver/room.h
@@ -11,17 +11,6 @@
 #include "pvedata.h"
 #include "bornpoint.h"
 
-namespace MetaData
-{
-    struct Map;
-    struct AirLine;
-    struct MapThing;
-    struct Player;
-    struct PveGeminiMode;
-    struct PveGemini;
-    struct Skill;
-}
-
 class Entity;
 class RoomEntity;
 class MoveableEntity;
@@ -71,8 +60,8 @@ public:
     bool added_to_over_room = false;
     glm::vec3 last_player_jump_pos;
     std::map<int, RoomObstacleWeakPtr> mine_objects;
-    MetaData::PveGeminiMode* pve_mode_meta = nullptr;
-    MetaData::PveGemini* pve_instance = nullptr;
+    const mt::PveGeminiMode* pve_mode_meta = nullptr;
+    const mt::PveGemini* pve_instance = nullptr;
     int pve_human_num = 0;
     PveData pve_data;
 
@@ -92,7 +81,7 @@ public:
     long long GetRoomUuid() { return room_uuid_; }
     int GetRoomIdx() { return room_idx_; }
     std::string GetMapTplName() { return map_tpl_name_; }
-    const MetaData::Map* GetMapMeta() { return map_meta_; }
+    const mt::Map* GetMapMeta() { return map_meta_; }
     #if 1
     bool IsWaitingStart() { return false; }
     #else
@@ -140,9 +129,9 @@ public:
     int CreateLootEx(int equip_id, Position born_pos, Position pos, int count, int equip_lv, bool show_anim);
     int CreateBullet(Creature* sender,
                      Creature* passenger,
-                     MetaData::Equip* weapon_meta,
-                     MetaData::Equip* bullet_meta,
-                     MetaData::Skill* skill_meta,
+                     const mt::Equip* weapon_meta,
+                     const mt::Equip* bullet_meta,
+                     const mt::Skill* skill_meta,
                      Position pos,
                      glm::vec3 dir,
                      float fly_distance,
@@ -153,7 +142,7 @@ public:
                      float shot_animi_time);
     Car* CreateCar(Human* driver,
                    int car_uniid,
-                   MetaData::Equip* meta,
+                   const mt::Equip* meta,
                    const Position& pos,
                    int team_id);
     Hero* CreateHero(Creature* master,
@@ -236,7 +225,7 @@ private:
     void MatchTeam(Human* hum);
     void CombineTeam();
     void AirDrop(int appear_time, int box_id, int airdrop_id);
-    void AdjustAirDropPos(MetaData::MapThing* thing_meta, Position& box_pos);
+    void AdjustAirDropPos(const mt::MapThing* thing_meta, Position& box_pos);
     void AirRaid(int airraid_id);
     void ShuaPlane();
     Team* NewTeam();
@@ -308,7 +297,7 @@ private:
     int room_idx_ = 0;
     RoomMode_e room_mode_ = kChiJiMode;
     long long room_uuid_ = 0;
-    const MetaData::Map* map_meta_ = nullptr;
+    const mt::Map* map_meta_ = nullptr;
     std::string map_tpl_name_;
     RoomType_e room_type_ = RT_NewBrid;
 
@@ -323,7 +312,7 @@ private:
     int alive_count_ = 0;
     long long alive_count_chged_frameno_ = 0;
     int human_alive_count_ = 0;
-    MetaData::AirLine* airline_ = nullptr;
+    const mt::AirLine* airline_ = nullptr;
     size_t airdrop_times_ = 0;
     size_t airraid_times_ = 0;
     int level0room_born_point_uniid_ = 0;
diff --git a/server/gameserver/weapon.h b/server/gameserver/weapon.h
index 178f0e1d..0341d2cb 100644
--- a/server/gameserver/weapon.h
+++ b/server/gameserver/weapon.h
@@ -5,12 +5,6 @@ namespace cs
     class MFWeapon;
 }
 
-namespace MetaData
-{
-    struct Equip;
-    struct Skill;
-}
-
 class Creature;
 class Weapon
 {
@@ -20,9 +14,9 @@ class Weapon
     int weapon_idx = 0;
     int weapon_id = 0;
     int ammo = 0;
-    MetaData::Equip* meta = nullptr;
-    MetaData::Equip* bullet_meta = nullptr;
-    MetaData::Skill* skill_meta = nullptr;
+    const mt::Equip* meta = nullptr;
+    const mt::Equip* bullet_meta = nullptr;
+    const mt::Skill* skill_meta = nullptr;
 
     void Clear();
     void ToPB(Creature* c, cs::MFWeapon* pb_obj);