diff --git a/simnet/client/components/chronicle/genshin.py b/simnet/client/components/chronicle/genshin.py
index 90581c4..1c6ba9a 100644
--- a/simnet/client/components/chronicle/genshin.py
+++ b/simnet/client/components/chronicle/genshin.py
@@ -5,6 +5,7 @@
 from simnet.errors import DataNotPublic, BadRequest
 from simnet.models.genshin.chronicle.abyss import SpiralAbyss, SpiralAbyssPair
 from simnet.models.genshin.chronicle.achievement import GenshinAchievementInfo
+from simnet.models.genshin.chronicle.act_calendar import GenshinActCalendar
 from simnet.models.genshin.chronicle.character_detail import GenshinCharacterListInfo, GenshinDetailCharacters
 from simnet.models.genshin.chronicle.characters import Character
 from simnet.models.genshin.chronicle.img_theater import ImgTheater
@@ -380,3 +381,18 @@ async def get_genshin_achievement_info(
         """
         data = await self._request_genshin_record("achievement", player_id, method="POST", lang=lang)
         return GenshinAchievementInfo(**data)
+
+    async def get_genshin_act_calendar(
+        self, player_id: Optional[int] = None, *, lang: Optional[str] = None
+    ) -> GenshinActCalendar:
+        """Get genshin act calendar.
+
+        Args:
+            player_id (Optional[int], optional): The player ID. Defaults to None.
+            lang (Optional[str], optional): The language of the data. Defaults to None.
+
+        Returns:
+            GenshinActCalendar: The requested act calendar info.
+        """
+        data = await self._request_genshin_record("act_calendar", player_id, method="POST", lang=lang)
+        return GenshinActCalendar(**data)
diff --git a/simnet/models/genshin/chronicle/act_calendar.py b/simnet/models/genshin/chronicle/act_calendar.py
new file mode 100644
index 0000000..2186797
--- /dev/null
+++ b/simnet/models/genshin/chronicle/act_calendar.py
@@ -0,0 +1,72 @@
+from datetime import datetime, timedelta
+from typing import List
+
+from simnet.models.base import APIModel
+from simnet.models.genshin.character import BaseCharacter
+
+
+class EquipListItem(BaseCharacter):
+    """A model representing an equipment item in the Genshin act calendar."""
+
+    wiki_url: str
+
+
+class AvatarListItem(BaseCharacter):
+    """A model representing an avatar item in the Genshin act calendar."""
+
+    is_invisible: bool = False
+
+
+class CardPoolListItem(APIModel):
+    """A model representing an item in the card pool list in the Genshin act calendar."""
+
+    pool_id: int
+    version_name: str
+    pool_name: str
+    pool_type: int
+    avatars: List[AvatarListItem]
+    weapon: List[EquipListItem]
+    start_timestamp: datetime
+    end_timestamp: datetime
+    jump_url: str
+    pool_status: int
+    countdown_seconds: timedelta
+
+
+class RewardItem(APIModel):
+    """A model representing a reward item in the Genshin act calendar."""
+
+    item_id: int
+    name: str
+    icon: str
+    wiki_url: str
+    num: int
+    rarity: str
+    homepage_show: bool
+
+
+class ActListItem(APIModel):
+    """A model representing an item in the Genshin act calendar."""
+
+    id: int
+    name: str
+    type: str
+    start_timestamp: datetime
+    end_timestamp: datetime
+    desc: str
+    strategy: str
+    countdown_seconds: timedelta
+    status: int
+    reward_list: List[RewardItem]
+    is_finished: bool
+
+
+class GenshinActCalendar(APIModel):
+    """A model representing the StarRail act calendar."""
+
+    avatar_card_pool_list: List[CardPoolListItem]
+    weapon_card_pool_list: List[CardPoolListItem]
+    mixed_card_pool_list: List[CardPoolListItem]
+
+    act_list: List[ActListItem]
+    fixed_act_list: List[ActListItem]
diff --git a/simnet/models/genshin/chronicle/img_theater.py b/simnet/models/genshin/chronicle/img_theater.py
index 5920037..5c75a0a 100644
--- a/simnet/models/genshin/chronicle/img_theater.py
+++ b/simnet/models/genshin/chronicle/img_theater.py
@@ -1,6 +1,7 @@
 import datetime
 import enum
 import typing
+from typing import Optional
 
 from pydantic import Field
 
@@ -171,10 +172,10 @@ class ImgTheaterFightStaticAvatar(BaseCharacter):
 
 
 class ImgTheaterFightStatic(APIModel):
-    max_defeat_avatar: ImgTheaterFightStaticAvatar
-    max_damage_avatar: ImgTheaterFightStaticAvatar
-    max_take_damage_avatar: ImgTheaterFightStaticAvatar
-    total_coin_consumed: ImgTheaterFightStaticAvatar
+    max_defeat_avatar: Optional[ImgTheaterFightStaticAvatar]
+    max_damage_avatar: Optional[ImgTheaterFightStaticAvatar]
+    max_take_damage_avatar: Optional[ImgTheaterFightStaticAvatar]
+    total_coin_consumed: Optional[ImgTheaterFightStaticAvatar]
     shortest_avatar_list: typing.Sequence[ImgTheaterFightStaticAvatar]
     total_use_time: int
     is_show_battle_stats: bool
diff --git a/tests/test_genshin_battle_chronicle_client.py b/tests/test_genshin_battle_chronicle_client.py
index e9f31d4..84444c9 100644
--- a/tests/test_genshin_battle_chronicle_client.py
+++ b/tests/test_genshin_battle_chronicle_client.py
@@ -90,3 +90,8 @@ async def test_get_genshin_character_detail(genshin_client: GenshinBattleChronic
     async def test_get_genshin_achievement_info(genshin_client: GenshinBattleChronicleClient):
         data = await genshin_client.get_genshin_achievement_info()
         assert data
+
+    @staticmethod
+    async def test_get_genshin_act_calendar(genshin_client: GenshinBattleChronicleClient):
+        data = await genshin_client.get_genshin_act_calendar()
+        assert data