diff --git a/api/emblemapi/settings.py b/api/emblemapi/settings.py
index 77f29a8..126336b 100644
--- a/api/emblemapi/settings.py
+++ b/api/emblemapi/settings.py
@@ -162,13 +162,14 @@ if ENV == "prod":
     ARCHIVE_BUCKET = "emblem-archive-prod"
     FRAMES_BUCKET = "emblem-frames-prod"
     OSS_QRS_BUCKET = "emblem-qrs"
+    OSS_QRS_ENDPOINT = "https://oss-cn-guangzhou.aliyuncs.com"
 else:
     OSS = aliyun_dev_key
     FEATURES_BUCKET = "emblem-features-dev-1"
     ARCHIVE_BUCKET = "emblem-oss-archive-dev-1"
     FRAMES_BUCKET = "emblem-frames-dev"
     OSS_QRS_BUCKET = ARCHIVE_BUCKET
-
+    OSS_QRS_ENDPOINT = None
 
 IPINFO_TOKEN = '537dea9ec5c99a'
 
diff --git a/api/products/aliyun.py b/api/products/aliyun.py
index 0cafe04..61fe652 100644
--- a/api/products/aliyun.py
+++ b/api/products/aliyun.py
@@ -1,46 +1,43 @@
-import json
 import oss2
-from aliyunsdkcore.client import AcsClient
-from aliyunsdkcore.request import CommonRequest
 from django.conf import settings
 
-def oss_bucket(bucketname):
+def oss_bucket(bucket, endpoint=None):
     oss = settings.OSS
     auth = oss2.Auth(oss['access_key'], oss['secret'])
-    bname = bucketname or oss['bucket']
-    bucket = oss2.Bucket(auth, oss['endpoint'], bname)
+    bname = bucket or oss['bucket']
+    bucket = oss2.Bucket(auth, endpoint or oss['endpoint'], bname)
     return bucket
 
-def oss_put(name, f, bucket=None):
-    oss_bucket(bucket).put_object(name, f)
+def oss_put(name, f, bucket=None, endpoint=None):
+    oss_bucket(bucket, endpoint).put_object(name, f)
 
-def oss_get(name, bucket=None):
+def oss_get(name, bucket=None, endpoint=None):
     try:
-        return oss_bucket(bucket).get_object(name).read()
+        return oss_bucket(bucket, endpoint).get_object(name).read()
     except oss2.exceptions.NoSuchKey:
         return None
 
-def oss_list(bucket):
+def oss_list(bucket=None, endpoint=None):
     ret = []
     for obj in oss_bucket(bucket).list_objects().object_list:
         ret.append(obj.key)
     return ret
 
-def oss_delete(name, bucket):
-    oss_bucket(bucket).delete_object(name)
+def oss_delete(name, bucket=None, endpoint=None):
+    oss_bucket(bucket, endpoint).delete_object(name)
 
-def oss_sign_url(name, method='GET', bucket=None):
-    return oss_bucket(bucket).sign_url(method, name.encode(), 24 * 60 * 60)
+def oss_sign_url(name, method='GET', bucket=None, endpoint=None):
+    return oss_bucket(bucket, endpoint).sign_url(method, name.encode(), 24 * 60 * 60)
 
-def oss_has(name, bucket=None):
+def oss_has(name, bucket=None, endpoint=None):
     try:
-        obj = oss_bucket(bucket).get_object(name)
+        obj = oss_bucket(bucket, endpoint).get_object(name)
         return True
     except oss2.exceptions.NoSuchKey:
         return False
 
-def oss_stat(bucket=None):
-    bucket = oss_bucket(bucket)
+def oss_stat(bucket=None, endpoint=None):
+    bucket = oss_bucket(bucket, endpoint)
     stat = bucket.get_bucket_stat()
     return {
         'objects': stat.object_count,
diff --git a/api/products/views.py b/api/products/views.py
index a21cb69..f86236d 100644
--- a/api/products/views.py
+++ b/api/products/views.py
@@ -1636,7 +1636,7 @@ class QrStdUploadView(BaseView):
             raise Exception("invalid file name")
         pref = name[:2]
         key = f"v5/{pref}/{fname}"
-        r = oss_put(key, body, bucket=settings.OSS_QRS_BUCKET)
+        r = oss_put(key, body, bucket=settings.OSS_QRS_BUCKET, endpoint=settings.OSS_QRS_ENDPOINT)
 
 class EstorArchive(BaseView):
     name = 'estor-archive'