diff --git a/models/enums.py b/models/enums.py
index 8b63e97..b828326 100644
--- a/models/enums.py
+++ b/models/enums.py
@@ -142,3 +142,15 @@ class RelicPosition(str, Enum):
     """ 位面球 """
     OBJECT: str = "OBJECT"
     """ 连结绳 """
+
+    @property
+    def num(self):
+        index_map = {
+            RelicPosition.HEAD: 0,
+            RelicPosition.HAND: 1,
+            RelicPosition.BODY: 2,
+            RelicPosition.FOOT: 3,
+            RelicPosition.NECK: 0,
+            RelicPosition.OBJECT: 1,
+        }
+        return index_map.get(self)
diff --git a/models/relic_affix.py b/models/relic_affix.py
index c9b1c98..ce83575 100644
--- a/models/relic_affix.py
+++ b/models/relic_affix.py
@@ -37,11 +37,6 @@ class RelicAffixAll(BaseModel):
     sub_affix: Dict[str, SingleRelicAffix]
     """ 副词条 """
 
-    @property
-    def rarity(self) -> int:
-        rarity_map = {9: 3, 12: 4, 16: 5}
-        return rarity_map.get(self.max_level, 2)
-
     @root_validator(pre=True)
     def transform_dicts(cls, values):
         for data in ["main_affix", "sub_affix"]: