diff --git a/src/classes/avatar/core.py b/src/classes/avatar/core.py
index 7397e88..c2151cf 100644
--- a/src/classes/avatar/core.py
+++ b/src/classes/avatar/core.py
@@ -87,7 +87,7 @@ class Avatar(
     tile: Optional[Tile] = None
 
     root: Root = field(default_factory=lambda: random.choice(list(Root)))
-    personas: List[Persona] = field(default_factory=list)
+    personas: List[Persona] = field(default=None)  # type: ignore
     technique: Technique | None = None
     _pending_events: List[Event] = field(default_factory=list)
     current_action: Optional[ActionInstance] = None
@@ -325,7 +325,7 @@ class Avatar(
         max_hp = HP_MAX_BY_REALM.get(self.cultivation_progress.realm, 100)
         self.hp = HP(max_hp, max_hp)
         
-        if not self.personas:
+        if self.personas is None:
             self.personas = get_random_compatible_personas(persona_num, avatar=self)
 
         if self.technique is None:
diff --git a/tests/test_action_gift.py b/tests/test_action_gift.py
index 5fb933f..5fb6620 100644
--- a/tests/test_action_gift.py
+++ b/tests/test_action_gift.py
@@ -16,7 +16,7 @@ from src.classes.calendar import create_month_stamp, Year, Month
 @pytest.fixture
 def target_avatar(base_world):
     """创建第二个角色作为赠送目标"""
-    return Avatar(
+    av = Avatar(
         world=base_world,
         name="TargetNPC",
         id=get_avatar_id(),
@@ -25,8 +25,11 @@ def target_avatar(base_world):
         gender=Gender.FEMALE,
         pos_x=0,
         pos_y=0,
-        personas=[],  # 避免随机特质影响价格测试
+        personas=[],  # 显式清空特质，避免随机特质影响价格测试
     )
+    # 强制重算一次效果，确保属性干净
+    av.recalc_effects()
+    return av
 
 @pytest.fixture
 def gift_action(dummy_avatar, base_world):