diff --git a/twe/sammo/Event/Action/ChangeCity.php b/twe/sammo/Event/Action/ChangeCity.php
new file mode 100644
index 00000000..a601823e
--- /dev/null
+++ b/twe/sammo/Event/Action/ChangeCity.php
@@ -0,0 +1,122 @@
+<?php
+namespace sammo;
+
+//기존 시나리오에서 개시 1월에 내정을 깎는 것을 모사.
+class ChangeCity extends sammo\Event\Action{
+    const AVAILABLE_KEY = [
+        'pop'=>true,
+        'agri'=>true,
+        'comm'=>true,
+        'secu'=>true,
+        'rate'=>true,
+        'def'=>true,
+        'wall'=>true
+    ];
+    const REGEXP_PERCENT = '/^(\d+(\.\d+)?)%$/';// 123.5%   [1]=float
+    const REGEXP_MATH = '/^([\+\-\/\*])(\d+(\.\d+)?)$/'; //+30 [1]=기호, [2]=float
+
+    private $queries;
+    private $cities;
+    public function __construct(array $cities = null, $action){
+
+        //values 포맷은 key, value로 
+        if($cities == null){
+            //city가 null인 경우엔 모두
+            $cities = DB::db()->queryFirstColumn('SELECT city FROM city');    
+        }
+        else{
+            $cities = DB::db()->queryFirstColumn('SELECT city FROM city WHERE name IN (%ls)', $cities);
+        }
+
+        $queries = [];
+        foreach($actions as $key => $value){
+            if(!key_exists($key, self::AVAILABLE_KEY)){
+                continue;
+            }
+
+            if(!is_int($value) && !is_float($value) && !is_string($value)){
+                throw new \InvalidArgumentException('int, float, string이어야 합니다.');
+            }
+
+            if($key == 'rate'){
+                $queries['rate'] = $this->genSQLRate($value);
+                continue;
+            }
+
+            $queries[$key] = $this->genSQLGeneric($value);
+        }
+        
+        $this->queries = $queries;
+    }
+
+    private function genSQLRate($value){
+        //민심은 max값이 100으로 고정이므로 처리 방식이 다름.
+        if(is_float($value)){
+            if($value < 0){
+                throw new \InvalidArgumentException('음수를 곱할 수 없습니다.');
+            }
+            return DB::db()->sqleval('least(100, ROUND(`rate` * %d, 0))', $value);
+        }
+        if(is_int($value)){
+            return DB::db()->sqleval('%i', Util::valueFit($value, 0, 100));
+        }
+
+        $matches = null;
+        if(preg_match(self::REGEXP_PERCENT, $value, $matches)){
+            $value = round($matches[1], 0);
+            return DB::db()->sqleval('%i', Util::valueFit($value, 0, 100));
+        }
+
+        if(preg_match(self::REGEXP_MATH, $value, $matches)){
+            $op = $matches[1];
+            $value = $matches[2];
+            if($op == '/' && $value == 0){
+                throw new \InvalidArgumentException('0으로 나눌 수 없습니다.');
+            }
+            return DB::db()->sqleval('least(100, greatest(0, ROUND(`rate` %l %d, 0)))', $op, $value);
+        }
+        
+        throw new \InvalidArgumentException('알 수 없는 패턴입니다.');
+
+    }
+
+    private function genSQLGeneric($key, $value){
+        $keyMax = $key.'2'; //comm, comm2
+
+        if(is_float($value)){
+            if($value < 0){
+                throw new \InvalidArgumentException('음수를 곱할 수 없습니다.');
+            }
+            return DB::db()->sqleval('least(%b, ROUND(%b * %d, 0))', $keyMax, $key, $value);
+        }
+        if(is_int($value)){
+            return DB::db()->sqleval('least(%b, %i)', $keyMax, $value);
+        }
+
+        $matches = null;
+        if(preg_match(self::REGEXP_PERCENT, $value, $matches)){
+            $value = round($matches[1], 0);
+            return DB::db()->sqleval('ROUND(%b * %d, 0)', $keyMax, $value/100);
+        }
+
+        if(preg_match(self::REGEXP_MATH, $value, $matches)){
+            $op = $matches[1];
+            $value = $matches[2];
+            if($op == '/' && $value == 0){
+                throw new \InvalidArgumentException('0으로 나눌 수 없습니다.');
+            }
+            return DB::db()->sqleval('least(%b, greatest(0, ROUND($b %l %d, 0)))', $keyMax, $key, $op, $value);
+        }
+        
+        throw new \InvalidArgumentException('알 수 없는 패턴입니다.');
+
+    }
+
+    public function run($env=null){
+        DB::db()->update('city', 
+            $this->queries
+        , 'city IN (%li)', $this->cities);
+        return [__CLASS__, DB::db()->affectedRows()];
+    }
+
+}
\ No newline at end of file
diff --git a/twe/scenario/scenario_frame.json b/twe/scenario/scenario_frame.json
index 70bb89b2..82905963 100644
--- a/twe/scenario/scenario_frame.json
+++ b/twe/scenario/scenario_frame.json
@@ -22,7 +22,7 @@
         "str:역사"
     ],
     "initialActions":[
-        "array:action form"
+        "array:event form"
     ],
     "events":[
         "array:event form"