diff --git a/分组聚合查询.md b/分组聚合查询.md
index 4367d6a..9893433 100644
--- a/分组聚合查询.md
+++ b/分组聚合查询.md
@@ -1,3 +1,5 @@
+**中文** | [English](Group-Aggregation-Query)
+
 ```csharp
 static IFreeSql fsql = new FreeSql.FreeSqlBuilder()
     .UseConnectionString(FreeSql.DataType.MySql, connectionString)