diff --git a/core/datasource/hybrid_source.py b/core/datasource/hybrid_source.py
index 28120a8..304a788 100644
--- a/core/datasource/hybrid_source.py
+++ b/core/datasource/hybrid_source.py
@@ -584,7 +584,8 @@ class HybridDataSource:
             # 重新索引到主市场交易日
             index_data = index_data.reindex(primary_dates)
             
-            # 对非A股指数进行前向填充
+            # 对所有非A股指数进行前向填充
+            # 所有市场（港股、美股、黄金、加密货币）在T+1日09:00前都已收盘
             non_a_codes = [c for c in valid_codes if not self._is_china_index(c)]
             for code in non_a_codes:
                 if code in index_data.columns: