diff --git a/Basemap_SuPER/DataV_SuPER.py b/Basemap_SuPER/DataV_SuPER.py
index 3177685..080d924 100644
--- a/Basemap_SuPER/DataV_SuPER.py
+++ b/Basemap_SuPER/DataV_SuPER.py
@@ -10,7 +10,7 @@
 
 -------------------------------------------------------------------------------
 Authors: CVEO Team
-Last Updated: 2026-04-13
+Last Updated: 2026-04-19
 ===============================================================================
 """
 
@@ -114,7 +114,7 @@ def _name_matches_exact(target: str, candidate: str) -> bool:
 
 def resolve_adcode_by_name(
     province: str,
-    city: str,
+    city: Optional[str] = None,
     county: Optional[str] = None,
     prefer_full: bool = False,
 ) -> Optional[str]:
@@ -128,8 +128,8 @@ def resolve_adcode_by_name(
     ----------
     province : str
         省份名称, 如 "湖北省". 不能为空.
-    city : str
-        城市名称, 如 "武汉市". 不能为空.
+    city : str, optional
+        城市名称, 如 "武汉市". 可为空 (表示只解析到省).
     county : str, optional
         区县名称, 如 "江岸区". 可为空 (表示只解析到市级).
     prefer_full : bool, optional
@@ -233,7 +233,7 @@ def resolve_adcode_by_name(
 
 def fetch_and_save_geojson_by_name(
     province: str,
-    city: str,
+    city: Optional[str],
     county: Optional[str],
     out_dir: Path,
     prefer_full: bool = False,
@@ -245,8 +245,8 @@ def fetch_and_save_geojson_by_name(
     ----------
     province : str
         省份名称, 如 "湖北省". 不能为空.
-    city : str
-        城市名称, 如 "武汉市". 不能为空.
+    city : str, optional
+        城市名称, 如 "武汉市". 可为空 (表示只解析到省).
     county : str, optional
         区县名称, 如 "江岸区". 可为空 (表示只解析到市级).
     out_dir : Path
@@ -281,7 +281,9 @@ def fetch_and_save_geojson_by_name(
 
 if __name__ == "__main__":
     # 示例 1: 只获取市级边界 (province + city)
-    # out = fetch_and_save_geojson_by_name("湖北省", "武汉市", None, out_dir=Path("./data/vectors/"))
+    out = fetch_and_save_geojson_by_name(
+        "湖北省", None, None, out_dir=Path("./data/vectors/")
+    )
 
     # 示例 2: 获取十堰市县区级边界
     # out = fetch_and_save_geojson_by_name(
@@ -289,8 +291,8 @@ if __name__ == "__main__":
     # )
 
     # 示例 3: 获取区县级边界 (province + city + county)
-    out = fetch_and_save_geojson_by_name(
-        "湖北省", "十堰市", "郧西县", out_dir=Path("./data/vectors/"), prefer_full=True
-    )
+    # out = fetch_and_save_geojson_by_name(
+    #     "湖北省", "十堰市", "郧西县", out_dir=Path("./data/vectors/"), prefer_full=True
+    # )
 
     print(f"Saved raw JSON and GeoJSON: {out}.")