diff --git a/API_Reference/API_Reference.py b/API_Reference/API_Reference.py
index e2354e9..7991272 100644
--- a/API_Reference/API_Reference.py
+++ b/API_Reference/API_Reference.py
@@ -1,4 +1,4 @@
-# API Reference shows all functions in Guan package. The current version is guan-0.0.189, updated on December 07, 2023.
+# API Reference shows all functions in Guan package. The current version is guan-0.0.190, updated on December 09, 2023.
 
 import guan
 
diff --git a/Source_Code/PyPI/setup.cfg b/Source_Code/PyPI/setup.cfg
index 208342e..75f6ac4 100644
--- a/Source_Code/PyPI/setup.cfg
+++ b/Source_Code/PyPI/setup.cfg
@@ -1,7 +1,7 @@
 [metadata]
 # replace with your username:
 name = guan
-version = 0.0.189
+version = 0.0.190
 author = guanjihuan
 author_email = guanjihuan@163.com
 description = An open source python package
diff --git a/Source_Code/PyPI/src/guan.egg-info/PKG-INFO b/Source_Code/PyPI/src/guan.egg-info/PKG-INFO
index cdaba02..5b1bcc5 100644
--- a/Source_Code/PyPI/src/guan.egg-info/PKG-INFO
+++ b/Source_Code/PyPI/src/guan.egg-info/PKG-INFO
@@ -1,6 +1,6 @@
 Metadata-Version: 2.1
 Name: guan
-Version: 0.0.189
+Version: 0.0.190
 Summary: An open source python package
 Home-page: https://py.guanjihuan.com
 Author: guanjihuan
diff --git a/Source_Code/PyPI/src/guan/__init__.py b/Source_Code/PyPI/src/guan/__init__.py
index 40e5551..a5cf381 100644
--- a/Source_Code/PyPI/src/guan/__init__.py
+++ b/Source_Code/PyPI/src/guan/__init__.py
@@ -1,6 +1,6 @@
 # Guan is an open-source python package developed and maintained by https://www.guanjihuan.com/about (Ji-Huan Guan, 关济寰). The primary location of this package is on website https://py.guanjihuan.com. GitHub link: https://github.com/guanjihuan/py.guanjihuan.com.
 
-# The current version is guan-0.0.189, updated on December 07, 2023.
+# The current version is guan-0.0.190, updated on December 09, 2023.
 
 # Installation: pip install --upgrade guan
 
@@ -3648,7 +3648,6 @@ def encryption_MD5(password, salt=''):
 def encryption_SHA_256(password, salt=''):
     import hashlib
     password = salt+password
-    print(password)
     hashed_password = hashlib.sha256(password.encode()).hexdigest()
     return hashed_password