diff --git a/hwe/sammo/Enums/NationUpgradeKey.php b/hwe/sammo/Enums/NationUpgradeKey.php
index 2ba31569..3a68912f 100644
--- a/hwe/sammo/Enums/NationUpgradeKey.php
+++ b/hwe/sammo/Enums/NationUpgradeKey.php
@@ -23,6 +23,4 @@ enum NationAuxKey: string
     case can_음귀병사용 = 'can_음귀병사용';
     case can_무희사용 = 'can_무희사용';
     case can_흑병사용 = 'can_흑병사용';
-
-
 }
\ No newline at end of file
diff --git a/hwe/sammo/GameUnitConstraint/ReqChief.php b/hwe/sammo/GameUnitConstraint/ReqChief.php
new file mode 100644
index 00000000..517d26a4
--- /dev/null
+++ b/hwe/sammo/GameUnitConstraint/ReqChief.php
@@ -0,0 +1,26 @@
+<?php
+
+namespace sammo\GameUnitConstraint;
+
+use sammo\General;
+
+class ReqChief extends BaseGameUnitConstraint
+{
+    public function __construct()
+    {
+    }
+
+    public function test(General $general, array $ownCities, array $ownRegions, int $relativeYear, int $tech, array $nationAux): bool
+    {
+        if($general->getVar('officer_level') >= 5){
+            return true;
+        }
+
+        return false;
+    }
+
+    public function getInfo(): string
+    {
+        return "군주 및 수뇌부만 가능";
+    }
+}
diff --git a/hwe/sammo/GameUnitConstraint/ReqCitiesWithCityLevel.php b/hwe/sammo/GameUnitConstraint/ReqCitiesWithCityLevel.php
new file mode 100644
index 00000000..055acd63
--- /dev/null
+++ b/hwe/sammo/GameUnitConstraint/ReqCitiesWithCityLevel.php
@@ -0,0 +1,48 @@
+<?php
+
+namespace sammo\GameUnitConstraint;
+
+use sammo\CityConst;
+use sammo\General;
+
+class ReqCitiesWithCityLevel extends BaseGameUnitConstraint
+{
+
+    public readonly array $reqCities;
+    public function __construct(
+        public readonly int $reqCityLevel,
+        ...$reqCities)
+    {
+        $dstReqCities = [];
+        if (count($reqCities) == 0) {
+            $this->reqCities = [];
+            return;
+        }
+
+        foreach ($reqCities as $city) {
+            $dstReqCities[CityConst::byName($city)->id] = $city;
+        }
+        $this->reqCities = $dstReqCities;
+    }
+
+    public function test(General $general, array $ownCities, array $ownRegions, int $relativeYear, int $tech, array $nationAux): bool
+    {
+        foreach ($this->reqCities as $cityID => $cityName) {
+            if (!key_exists($cityID, $ownCities)) {
+                continue;
+            }
+
+            if($ownCities[$cityID]['level'] >= $this->reqCityLevel) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    public function getInfo(): string
+    {
+        $cityNameText = implode(', ', $this->reqCities);
+        return "{$cityNameText} 소유시 가능";
+    }
+}
diff --git a/hwe/sammo/GameUnitConstraint/ReqNationAux.php b/hwe/sammo/GameUnitConstraint/ReqNationAux.php
new file mode 100644
index 00000000..f6b2eca2
--- /dev/null
+++ b/hwe/sammo/GameUnitConstraint/ReqNationAux.php
@@ -0,0 +1,122 @@
+<?php
+
+namespace sammo\GameUnitConstraint;
+
+use sammo\CityConst;
+use sammo\Enums\NationAuxKey;
+use sammo\General;
+
+class ReqNationAux extends BaseGameUnitConstraint
+{
+
+    const AVAILABLE_CMP = [
+        '==' => true,
+        '!=' => true,
+        '<' => true,
+        '>' => true,
+        '<=' => true,
+        '>=' => true,
+    ];
+
+    public function __construct(
+        public readonly NationAuxKey $reqNationAuxKey,
+        public readonly string $cmp,
+        public readonly int|float $value
+    ) {
+        if (!array_key_exists($cmp, self::AVAILABLE_CMP)) {
+            throw new \InvalidArgumentException('올바르지 않은 비교연산자입니다');
+        }
+    }
+
+    public function test(General $general, array $ownCities, array $ownRegions, int $relativeYear, int $tech, array $nationAux): bool
+    {
+
+        $lhs = $nationAux[$this->reqNationAuxKey->value] ?? 0;
+        $rhs = $this->value;
+
+        $value = false;
+        switch ($this->cmp) {
+            case '==':
+                $value = ($lhs == $rhs);
+                break;
+            case '!=':
+                $value = ($lhs != $rhs);
+                break;
+            case '<=':
+                $value = ($lhs <= $rhs);
+                break;
+            case '>=':
+                $value = ($lhs >= $rhs);
+                break;
+            case '<':
+                $value = ($lhs < $rhs);
+                break;
+            case '>':
+                $value = ($lhs > $rhs);
+                break;
+        }
+
+        return $value;
+    }
+
+    public function getInfo(): string
+    {
+        //Enum별 특수한 경우
+        switch ($this->reqNationAuxKey) {
+            case NationAuxKey::can_대검병사용:
+                if ($this->cmp == "==" && $this->value == 1) return "대검병 연구 시 가능";
+                break;
+            case NationAuxKey::can_극병사용:
+                if ($this->cmp == "==" && $this->value == 1) return "극병 연구 시 가능";
+                break;
+            case NationAuxKey::can_화시병사용:
+                if ($this->cmp == "==" && $this->value == 1) return "화시병 연구 시 가능";
+                break;
+            case NationAuxKey::can_원융노병사용:
+                if ($this->cmp == "==" && $this->value == 1) return "원융노병 연구 시 가능";
+                break;
+            case NationAuxKey::can_산저병사용:
+                if ($this->cmp == "==" && $this->value == 1) return "산저병 연구 시 가능";
+                break;
+            case NationAuxKey::can_상병사용:
+                if ($this->cmp == "==" && $this->value == 1) return "상병 연구 시 가능";
+                break;
+            case NationAuxKey::can_음귀병사용:
+                if ($this->cmp == "==" && $this->value == 1) return "음귀병 연구 시 가능";
+                break;
+            case NationAuxKey::can_무희사용:
+                if ($this->cmp == "==" && $this->value == 1) return "무희 연구 시 가능";
+                break;
+            case NationAuxKey::can_흑병사용:
+                if ($this->cmp == "==" && $this->value == 1) return "흑병 연구 시 가능";
+                break;
+            case NationAuxKey::did_특성초토화:
+                if ($this->cmp == ">=" && $this->value == 1) return "특성 초토화 시 가능";
+                break;
+        }
+
+        //범용
+        switch ($this->cmp) {
+            case '==': {
+                    if ($this->value == 0) {
+                        return "{$this->reqNationAuxKey->value} 없을 때";
+                    }
+                    if ($this->value == 1) {
+                        return "{$this->reqNationAuxKey->value} 있을 때";
+                    }
+                    return "{$this->reqNationAuxKey->value} = {$this->value} 일 때";
+                };
+            case '!=': {
+                    if ($this->value == 0) {
+                        return "{$this->reqNationAuxKey->value} 없을 때";
+                    }
+                    if ($this->value == 1) {
+                        return "{$this->reqNationAuxKey->value} 있을 때";
+                    }
+                    return "{$this->reqNationAuxKey->value} != {$this->value} 일 때";
+                };
+            default:
+                return "{$this->reqNationAuxKey->value} {$this->cmp} {$this->value} 일 때";
+        }
+    }
+}
diff --git a/hwe/sammo/GameUnitConstraint/ReqNotChief.php b/hwe/sammo/GameUnitConstraint/ReqNotChief.php
new file mode 100644
index 00000000..04447974
--- /dev/null
+++ b/hwe/sammo/GameUnitConstraint/ReqNotChief.php
@@ -0,0 +1,26 @@
+<?php
+
+namespace sammo\GameUnitConstraint;
+
+use sammo\General;
+
+class ReqNotChief extends BaseGameUnitConstraint
+{
+    public function __construct()
+    {
+    }
+
+    public function test(General $general, array $ownCities, array $ownRegions, int $relativeYear, int $tech, array $nationAux): bool
+    {
+        if($general->getVar('officer_level') < 5){
+            return true;
+        }
+
+        return false;
+    }
+
+    public function getInfo(): string
+    {
+        return "군주 및 수뇌부는 불가";
+    }
+}