diff --git a/API_Reference/pymilvus/v2.4.x/DataImport/RemoteBulkWriter/RemoteBulkWriter.md b/API_Reference/pymilvus/v2.4.x/DataImport/RemoteBulkWriter/RemoteBulkWriter.md
index 540d3319e..a6917283c 100644
--- a/API_Reference/pymilvus/v2.4.x/DataImport/RemoteBulkWriter/RemoteBulkWriter.md
+++ b/API_Reference/pymilvus/v2.4.x/DataImport/RemoteBulkWriter/RemoteBulkWriter.md
@@ -20,7 +20,7 @@ Constructs a **RemoteBulkWriter** object with a set of parameters, such as **sch
 
 ```python
 from pymilvus import CollectionSchema
-from pymilvus.bulk_writer import LocalBulkWriter, BulkFileType
+from pymilvus.bulk_writer import RemoteBulkWriter, BulkFileType
 
 writer = RemoteBulkWriter(
     schema=CollectionSchema(),
diff --git a/API_Reference/pymilvus/v2.4.x/MilvusClient/CollectionSchema/add_field.md b/API_Reference/pymilvus/v2.4.x/MilvusClient/CollectionSchema/add_field.md
index a384fff6d..61c6c22ee 100644
--- a/API_Reference/pymilvus/v2.4.x/MilvusClient/CollectionSchema/add_field.md
+++ b/API_Reference/pymilvus/v2.4.x/MilvusClient/CollectionSchema/add_field.md
@@ -78,7 +78,7 @@ add_field(
 
 - **max_length** (*int*) -
 
-    The maximum length of the field value.
+    The maximum byte length for strings allowed to be inserted. Note that multibyte characters (e.g., Unicode characters) may occupy more than one byte each, so ensure the byte length of inserted strings does not exceed the specified limit. Value range: [1, 65,535].
 
     This is mandatory for a **DataType.VARCHAR** field.
 
diff --git a/API_Reference/pymilvus/v2.4.x/ORM/CollectionSchema/add_field.md b/API_Reference/pymilvus/v2.4.x/ORM/CollectionSchema/add_field.md
index a384fff6d..61c6c22ee 100644
--- a/API_Reference/pymilvus/v2.4.x/ORM/CollectionSchema/add_field.md
+++ b/API_Reference/pymilvus/v2.4.x/ORM/CollectionSchema/add_field.md
@@ -78,7 +78,7 @@ add_field(
 
 - **max_length** (*int*) -
 
-    The maximum length of the field value.
+    The maximum byte length for strings allowed to be inserted. Note that multibyte characters (e.g., Unicode characters) may occupy more than one byte each, so ensure the byte length of inserted strings does not exceed the specified limit. Value range: [1, 65,535].
 
     This is mandatory for a **DataType.VARCHAR** field.