diff --git a/core/game/services.py b/core/game/services.py
index 9a925597..8834fcca 100644
--- a/core/game/services.py
+++ b/core/game/services.py
@@ -45,19 +45,40 @@ class GameStrategyService:
         return artwork_info.results.image_url_list[0]
 
 
-class GameMaterialService(GameStrategyService):
+class GameMaterialService:
     def __init__(self, cache: GameCache, collections: Optional[List[int]] = None):
-        super().__init__(cache, collections)
+        self._cache = cache
+        self._hyperion = Hyperion()
         self._collections = [428421, 1164644] if collections is None else collections
         self._special = ['雷电将军', '珊瑚宫心海', '菲谢尔', '托马', '八重神子', '九条裟罗', '辛焱', '神里绫华']
 
+    async def _get_material_from_hyperion(self, collection_id: int, character_name: str) -> int:
+        post_id: int = -1
+        post_full_in_collection = await self._hyperion.get_post_full_in_collection(collection_id)
+        if post_full_in_collection.error:
+            return post_id
+        for post_data in post_full_in_collection.data["posts"]:
+            topics = post_data["topics"]
+            for topic in topics:
+                if character_name == topic["name"]:
+                    post_id = int(post_data["post"]["post_id"])
+                    break
+            if post_id != -1:
+                break
+            subject = post_data["post"]["subject"]
+            if character_name in subject:
+                post_id = int(post_data["post"]["post_id"])
+            if post_id != -1:
+                break
+        return post_id
+
     async def get_material(self, character_name: str) -> str:
         cache = await self._cache.get_url_list(character_name)
         if len(cache) >= 1:
             return cache[-1]
 
         for collection_id in self._collections:
-            post_id = await self._get_strategy_from_hyperion(collection_id, character_name)
+            post_id = await self._get_material_from_hyperion(collection_id, character_name)
             if post_id != -1:
                 break
         else:
@@ -66,4 +87,11 @@ class GameMaterialService(GameStrategyService):
         artwork_info = await self._hyperion.get_artwork_info(2, post_id)
         await self._cache.set_url_list(character_name, artwork_info.results.image_url_list)
         image_url_list = artwork_info.results.image_url_list
-        return image_url_list[2] if character_name in self._special else image_url_list[1]
+        if len(image_url_list) == 0:
+            return ""
+        elif len(image_url_list) == 1:
+            return image_url_list[0]
+        elif character_name in self._special:
+            return image_url_list[2]
+        else:
+            return image_url_list[1]
diff --git a/plugins/genshin/material.py b/plugins/genshin/material.py
index c4a1858b..45524396 100644
--- a/plugins/genshin/material.py
+++ b/plugins/genshin/material.py
@@ -59,7 +59,7 @@ class Material(BasePlugins):
         Log.info(f"用户 {user.full_name}[{user.id}] 查询角色培养素材命令请求 || 参数 {character_name}")
         await message.reply_chat_action(ChatAction.UPLOAD_PHOTO)
         file_path = await url_to_file(url, "")
-        caption = "From 米游社 友人A " \
+        caption = "From 米游社 " \
                   f"查看 [原图]({url})"
         await message.reply_photo(photo=open(file_path, "rb"), caption=caption, filename=f"{character_name}.png",
                                   allow_sending_without_reply=True, parse_mode=ParseMode.MARKDOWN_V2)