diff --git a/hwe/func.php b/hwe/func.php
index b697723e..66774df1 100644
--- a/hwe/func.php
+++ b/hwe/func.php
@@ -1247,7 +1247,7 @@ function updateOnline()
     $gameStor->online_nation = join(', ', $onlineNation);
 }
 
-function addAge()
+function addAge(RandUtil $rng)
 {
     $db = DB::db();
     $gameStor = KVStorage::getStorage($db, 'game_env');
@@ -1268,6 +1268,7 @@ function addAge()
         foreach ($db->query('SELECT no,name,nation,leadership,strength,intel,aux from general where specage<=age and special=%s', GameConst::$defaultSpecialDomestic) as $general) {
             $generalID = $general['no'];
             $special = SpecialityHelper::pickSpecialDomestic(
+                $rng,
                 $general,
                 (Json::decode($general['aux'])['prev_types_special']) ?? []
             );
@@ -1295,6 +1296,7 @@ function addAge()
                 $updateVars['aux'] = Json::encode($generalAux);
             } else {
                 $special2 = SpecialityHelper::pickSpecialWar(
+                    $rng,
                     $general,
                     ($generalAux['prev_types_special2']) ?? []
                 );
diff --git a/hwe/sammo/TurnExecutionHelper.php b/hwe/sammo/TurnExecutionHelper.php
index 112783a3..0e28718a 100644
--- a/hwe/sammo/TurnExecutionHelper.php
+++ b/hwe/sammo/TurnExecutionHelper.php
@@ -447,7 +447,7 @@ class TurnExecutionHelper
                 updateQuaterly();
                 disaster($monthlyRng);
                 tradeRate($monthlyRng);
-                addAge();
+                addAge($monthlyRng);
                 // 새해 알림
                 $logger->pushGlobalActionLog("<C>{$gameStor->year}</>년이 되었습니다.");
                 $logger->flush(); //TODO: globalAction류는 전역에서 관리하는것이 좋을 듯.
diff --git a/hwe/sammo/WarUnit.php b/hwe/sammo/WarUnit.php
index 785329a0..7758b968 100644
--- a/hwe/sammo/WarUnit.php
+++ b/hwe/sammo/WarUnit.php
@@ -4,8 +4,6 @@ namespace sammo;
 
 class WarUnit
 {
-    public readonly RandUtil $rng;
-
     protected $general;
     protected $rawNation;
 
@@ -34,7 +32,7 @@ class WarUnit
     protected $logActivatedSkill = [];
     protected $isFinished = false;
 
-    private function __construct(RandUtil $rng, General $general)
+    private function __construct(public readonly RandUtil $rng, General $general)
     {
         $this->rng = $rng;
         $this->general = $general;
diff --git a/hwe/sammo/WarUnitCity.php b/hwe/sammo/WarUnitCity.php
index 994d9b4f..a53f44da 100644
--- a/hwe/sammo/WarUnitCity.php
+++ b/hwe/sammo/WarUnitCity.php
@@ -8,8 +8,7 @@ class WarUnitCity extends WarUnit{
 
     protected $cityRate;
 
-    function __construct(RandUtil $rng, $raw, $rawNation, int $year, int $month, $cityRate){
-        $this->rng = $rng;
+    function __construct(public readonly RandUtil $rng, $raw, $rawNation, int $year, int $month, $cityRate){
         $general = new DummyGeneral(false);
         $general->setVar('city', $raw['city']);
         $general->setVar('nation', $raw['nation']);
diff --git a/hwe/sammo/WarUnitGeneral.php b/hwe/sammo/WarUnitGeneral.php
index 43824ae0..14dfd9fa 100644
--- a/hwe/sammo/WarUnitGeneral.php
+++ b/hwe/sammo/WarUnitGeneral.php
@@ -10,9 +10,8 @@ class WarUnitGeneral extends WarUnit
     protected $killedPerson = 0;
     protected $deadPerson = 0;
 
-    function __construct(RandUtil $rng, General $general, array $rawNation, bool $isAttacker)
+    function __construct(public readonly RandUtil $rng, General $general, array $rawNation, bool $isAttacker)
     {
-        $this->rng = $rng;
         $this->general = $general;
         $this->raw = $general->getRaw();
         $this->rawNation = $rawNation; //read-only