diff --git a/webapp/mt/KillReward.php b/webapp/mt/KillReward.php
new file mode 100644
index 00000000..535d52c1
--- /dev/null
+++ b/webapp/mt/KillReward.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace mt;
+
+use phpcommon;
+
+class KillReward {
+
+    public static function get($kill)
+    {
+        self::msutBeHash();
+        return getXVal(self::$killHash, $kill);
+    }
+
+    protected static function mustBeHash()
+    {
+        if (is_null(self::$killHash)) {
+            self::$killHash = array();
+            foreach (self::getMetaList() as $meta) {
+                self::$killHash[$meta['kill_num']] = $meta;
+            }
+        }
+    }
+
+    protected static function getMetaList()
+    {
+        if (!self::$metaList) {
+            self::$metaList = getMetaTable('killReward@killReward.php');
+        }
+        return self::$metaList;
+    }
+
+    protected static $metaList;
+    protected static $killHash;
+
+}
diff --git a/webapp/mt/RankReward.php b/webapp/mt/RankReward.php
index 48daf30f..04f45952 100644
--- a/webapp/mt/RankReward.php
+++ b/webapp/mt/RankReward.php
@@ -6,24 +6,20 @@ use phpcommon;
 
 class RankReward {
 
-    public static function get($id)
+    public static function get($rank)
     {
-        return array_key_exists($id, self::getMetaList()) ? self::getMetaList()[$id] : null;
+        self::msutBeHash();
+        return getXVal(self::$rankHash, $rank);
     }
 
-    public static function getOldRankReward($id)
+    protected static function mustBeHash()
     {
-        $meta = self::get($id);
-        return array(
-            'rank' => $meta['rank'],
-            'parameter' => $meta['parameter'],
-            'drop' => $meta['drop'],
-            'ad_drop' => $meta['ad_drop'],
-            'ad_num' => $meta['ad_num'],
-            'js_num' => $meta['js_num'],
-            'js_drop' => $meta['js_drop'],
-            'zbmode_param' => $meta['zbmode_param'],
-        );
+        if (is_null(self::$rankHash)) {
+            self::$rankHash = array();
+            foreach (self::getMetaList() as $meta) {
+                self::$rankHash[$meta['rank']] = $meta;
+            }
+        }
     }
 
     protected static function getMetaList()
@@ -35,5 +31,6 @@ class RankReward {
     }
 
     protected static $metaList;
+    protected static $rankHash;
 
 }
diff --git a/webapp/services/BattleDataService.php b/webapp/services/BattleDataService.php
index 9f2b4d68..a37d43c8 100644
--- a/webapp/services/BattleDataService.php
+++ b/webapp/services/BattleDataService.php
@@ -26,6 +26,10 @@ class BattleDataService extends BaseService {
 
     public function updateBattleData()
     {
+        $heroDb = Hero::find(getReqVal('hero_uniid', 0));
+        if (!$heroDb) {
+            return false;
+        }
         error_log(json_encode($_REQUEST));
         error_log('updateBattleData1');
         if (!$this->decCost()) {