diff --git a/README.rst b/README.rst
index 79b830d53..50d10b0b5 100644
--- a/README.rst
+++ b/README.rst
@@ -1,7 +1,45 @@
 gaussdb -- GaussDB database adapter for Python
 ===================================================
 
-**gaussdb** is a modern implementation of a GaussDB adapter for Python, based on a fork of `psycopg` with enhancements and renaming.
+.. image:: https://img.shields.io/pypi/v/gaussdb.svg
+   :target: https://pypi.org/project/gaussdb/
+   :alt: PyPI version
+
+.. image:: https://img.shields.io/pypi/l/gaussdb.svg
+   :target: https://github.com/HuaweiCloudDeveloper/gaussdb-python/blob/master/LICENSE.txt
+   :alt: License: LGPL v3
+
+**gaussdb** provides a modern Python interface for GaussDB, derived from a fork of `psycopg <https://www.psycopg.org/>`_ .  
+It includes functional improvements and project renaming, retaining compatibility with the original codebase licensed under the **GNU Lesser General Public License v3.0**.
+
+Modifications made by HuaweiCloudDeveloper:
+
+- Package name changed from `psycopg` to `gaussdb`
+- Introduced support for both pure-Python and libpq implementations via PSYCOPG_IMPL
+- Added GaussDB-specific behavior adjustments to handle differences from PostgreSQL
+- Added SSL connection examples and dedicated SSL demonstration code
+- Added installation tools for GaussDB client drivers in the tools/ directory
+- Introduced compatibility handling for GaussDB’s Oracle-mode SQL behavior
+- Added pre-commit hooks and stricter lint/tooling configuration
+- Expanded example scripts to cover GaussDB usage scenarios
+- Modularized the project into multiple packages (gaussdb, gaussdb_pool, isort-gaussdb) beyond psycopg’s structure
+
+License
+-------
+
+This project is a **fork** of `psycopg`, originally developed by the Psycopg Team.
+
+- **Original work**: Copyright © 2020 The Psycopg Team  
+- **License**: GNU Lesser General Public License v3.0 (LGPL v3)
+
+**gaussdb** inherits the same license. All modifications are distributed under the **LGPL v3**.
+
+See the full license text in the :download:`LICENSE.txt` file.
+
+.. note::
+
+   **Important**: When redistributing this package (including on PyPI), you **must** include the ``LICENSE.txt`` file.
+
 
 .. _Hacking:
 
diff --git a/docs/README.rst b/docs/README.rst
index 8729f3860..f99c30151 100644
--- a/docs/README.rst
+++ b/docs/README.rst
@@ -3,6 +3,14 @@
 GaussDB documentation build
 ===========================
 
+.. note::
+
+   **License**: This documentation is part of the **gaussdb** project and is licensed under the
+   `GNU Lesser General Public License v3.0 (LGPL v3)`_.
+
+.. _GNU Lesser General Public License v3.0 (LGPL v3): https://www.gnu.org/licenses/lgpl-3.0.en.html
+
+
 Quick start::
 
     make env
diff --git a/docs/conf.py b/docs/conf.py
index b3a2fc51e..c4cb84e2d 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -26,8 +26,8 @@
 # -- Project information -----------------------------------------------------
 
 project = "gaussdb"
-copyright = "2020, Daniele Varrazzo and The Psycopg Team"
-author = "Daniele Varrazzo"
+copyright = "2020, The Psycopg Team, 2025 Huawei Cloud Developer Team"
+author = "Huawei Cloud Developer Team (based on Psycopg Team)"
 release = gaussdb.__version__
 
 
diff --git a/gaussdb/README.rst b/gaussdb/README.rst
index 6bd5fad17..18a07fcb1 100644
--- a/gaussdb/README.rst
+++ b/gaussdb/README.rst
@@ -1,8 +1,6 @@
 gaussdb: GaussDB database adapter for Python
 =================================================
 
-gaussdb is a modern implementation of a GaussDB adapter for Python.
-
 This distribution contains the pure Python package ``gaussdb``.
 
 .. Note::
@@ -34,4 +32,25 @@ Hacking
 For development information check out `the project readme`.
 
 
-Copyright (C) 2020 The Psycopg Team
+|
+
+License
+-------
+
+This project is a **fork** of `psycopg <https://www.psycopg.org/>`_, originally developed by the Psycopg Team.
+
+- **Original work**: Copyright © 2020 The Psycopg Team  
+- **Modifications**: Copyright © 2025 Huawei Cloud Developer Team  
+- **License**: GNU Lesser General Public License v3.0 (`LGPL v3 <https://www.gnu.org/licenses/lgpl-3.0.en.html>`_)
+
+**gaussdb** inherits the same license. All modifications are distributed under the **LGPL v3**.
+
+See the full license text in the :download:`LICENSE.txt` file.
+
+.. note::
+
+   **Important**: When redistributing this package (including on PyPI), you **must** include the ``LICENSE.txt`` file.
+
+|
+
+.. _psycopg: https://www.psycopg.org/
diff --git a/gaussdb/gaussdb/__init__.py b/gaussdb/gaussdb/__init__.py
index c1e02f474..2f6aff69c 100644
--- a/gaussdb/gaussdb/__init__.py
+++ b/gaussdb/gaussdb/__init__.py
@@ -1,8 +1,26 @@
 """
 gaussdb -- GaussDB database adapter for Python
+
+This file is part of gaussdb.
+
+gaussdb is a fork of psycopg[](https://www.psycopg.org/), originally
+developed by the Psycopg Team and licensed under the GNU Lesser
+General Public License v3.0 (LGPL v3).
+
+The original psycopg source code is copyright © 2001–2023 by the Psycopg Team.
+
+This modified version is distributed under the same LGPL v3 license.
+See the LICENSE file for the full license text.
 """
 
 # Copyright (C) 2020 The Psycopg Team
+# Modifications made by HuaweiCloudDeveloper (2025):
+# - Renamed package from 'psycopg' to 'gaussdb'
+# - Updated all internal imports (psycopg → gaussdb)
+# - Modified __init__.py to expose gaussdb.connect, etc.
+# - Adjusted documentation strings and error messages for GaussDB branding
+# - Added GaussDB-specific connection parameters (e.g., sslmode, gssencmode)
+# - Patched SQL parsing for GaussDB-specific syntax support
 
 import logging
 
diff --git a/gaussdb_pool/README.rst b/gaussdb_pool/README.rst
index a0fcfc15f..2a364cf8a 100644
--- a/gaussdb_pool/README.rst
+++ b/gaussdb_pool/README.rst
@@ -14,5 +14,25 @@ You can also install this package using::
 Please read `the project readme` and `the installation documentation` for
 more details.
 
+|
 
-Copyright (C) 2020 The Psycopg Team
+License
+-------
+
+This project is a **fork** of `psycopg <https://www.psycopg.org/>`_, originally developed by the Psycopg Team.
+
+- **Original work**: Copyright © 2020 The Psycopg Team  
+- **Modifications**: Copyright © 2025 Huawei Cloud Developer Team  
+- **License**: GNU Lesser General Public License v3.0 (`LGPL v3 <https://www.gnu.org/licenses/lgpl-3.0.en.html>`_)
+
+**gaussdb_pool** inherits the same license. All modifications are distributed under the **LGPL v3**.
+
+See the full license text in the :download:`LICENSE.txt` file.
+
+.. note::
+
+   **Important**: When redistributing this package (including on PyPI), you **must** include the ``LICENSE.txt`` file.
+
+|
+
+.. _psycopg: https://www.psycopg.org/
diff --git a/pyproject.toml b/pyproject.toml
index 268d2eb13..a740b9977 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -2,6 +2,10 @@
 requires = ["setuptools>=49.2.0", "wheel>=0.37"]
 build-backend = "setuptools.build_meta"
 
+[project]
+name = "gaussdb"
+license = { file = "LICENSE.txt" }
+
 [tool.pytest.ini_options]
 addopts = "-ra"
 filterwarnings = [
@@ -63,3 +67,6 @@ profile = "black"
 length_sort = true
 multi_line_output = 9
 sort_order = "gaussdb"  # requires the isort-gaussdb module
+
+[tool.setuptools]
+license-files = ["LICENSE.txt"]
\ No newline at end of file
diff --git a/tests/README.rst b/tests/README.rst
index cc6bac28e..72001275e 100644
--- a/tests/README.rst
+++ b/tests/README.rst
@@ -1,6 +1,34 @@
 gaussdb test suite
 ===================
 
+.. image:: https://img.shields.io/pypi/v/gaussdb.svg
+   :target: https://pypi.org/project/gaussdb/
+   :alt: PyPI version
+
+.. image:: https://img.shields.io/pypi/l/gaussdb.svg
+   :target: https://github.com/HuaweiCloudDeveloper/gaussdb-python/blob/master/LICENSE.txt
+   :alt: License: LGPL v3
+
+**gaussdb** provides a modern Python interface for GaussDB, derived from a fork of `psycopg <https://www.psycopg.org/>`_ .  
+It includes functional improvements and project renaming, retaining compatibility with the original codebase licensed under the **GNU Lesser General Public License v3.0**.
+
+License
+-------
+
+This project is a **fork** of `psycopg`, originally developed by the Psycopg Team.
+
+- **Original work**: Copyright © 2020 The Psycopg Team  
+- **License**: GNU Lesser General Public License v3.0 (LGPL v3)
+
+**gaussdb** inherits the same license. All modifications are distributed under the **LGPL v3**.
+
+See the full license text in the :download:`LICENSE.txt` file.
+
+.. note::
+
+   **Important**: When redistributing this package (including on PyPI), you **must** include the ``LICENSE.txt`` file.
+
+
 Quick version
 -------------
 
diff --git a/tests/types/test_numeric.py b/tests/types/test_numeric.py
index 148df564f..a6ee80ef2 100644
--- a/tests/types/test_numeric.py
+++ b/tests/types/test_numeric.py
@@ -271,30 +271,31 @@ def test_dump_float_approx(conn, val, expr):
 )
 @pytest.mark.parametrize("fmt_out", pq.Format)
 def test_load_float(conn, val, pgtype, want, fmt_out):
-    cur = conn.cursor(binary=fmt_out)
-    cur.execute(f"select %s::{pgtype}", (val,))
-    assert cur.pgresult.fformat(0) == fmt_out
-    assert cur.pgresult.ftype(0) == conn.adapters.types[pgtype].oid
-    result = cur.fetchone()[0]
-
-    def check(result, want):
-        assert type(result) is type(want)
-        if isnan(want):
-            assert isnan(result)
-        elif isinf(want):
-            assert isinf(result)
-            assert (result < 0) is (want < 0)
-        else:
-            assert result == want
+    with conn.cursor(binary=fmt_out) as cur:
+        cur.execute(f"select %s::{pgtype}", (val,))
+        assert cur.pgresult.fformat(0) == fmt_out
+        assert cur.pgresult.ftype(0) == conn.adapters.types[pgtype].oid
+        result = cur.fetchone()[0]
+
+        def check(result, want):
+            assert type(result) is type(want)
+            if isnan(want):
+                assert isnan(result)
+            elif isinf(want):
+                assert isinf(result)
+                assert (result < 0) is (want < 0)
+            else:
+                assert result == want
 
-    check(result, want)
+        check(result, want)
 
-    cur.execute(f"select array[%s::{pgtype}]", (val,))
-    assert cur.pgresult.fformat(0) == fmt_out
-    assert cur.pgresult.ftype(0) == conn.adapters.types[pgtype].array_oid
-    result = cur.fetchone()[0]
-    assert isinstance(result, list)
-    check(result[0], want)
+        cur.execute(f"select array[%s::{pgtype}]", (val,))
+        assert cur.pgresult.fformat(0) == fmt_out
+        assert cur.pgresult.ftype(0) == conn.adapters.types[pgtype].array_oid
+        result = cur.fetchone()[0]
+        assert isinstance(result, list)
+        check(result[0], want)
+    conn.close()
 
 
 @pytest.mark.parametrize(
diff --git a/tools/isort-gaussdb/README.rst b/tools/isort-gaussdb/README.rst
index 98d0cc496..07392eff9 100644
--- a/tools/isort-gaussdb/README.rst
+++ b/tools/isort-gaussdb/README.rst
@@ -27,3 +27,26 @@ this plug-in is totally useless and the same can be done using isort features.
 
 .. _isort: https://pycqa.github.io/isort/
 .. _gaussdb: https://www.huaweicloud.com/product/gaussdb.html
+
+|
+
+License
+-------
+
+This project is a **fork** of `psycopg <https://www.psycopg.org/>`_, originally developed by the Psycopg Team.
+
+- **Original work**: Copyright © 2020 The Psycopg Team  
+- **Modifications**: Copyright © 2025 Huawei Cloud Developer Team  
+- **License**: GNU Lesser General Public License v3.0 (`LGPL v3 <https://www.gnu.org/licenses/lgpl-3.0.en.html>`_)
+
+**isort-gaussdb** inherits the same license. All modifications are distributed under the **LGPL v3**.
+
+See the full license text in the :download:`LICENSE.txt` file.
+
+.. note::
+
+   **Important**: When redistributing this package (including on PyPI), you **must** include the ``LICENSE.txt`` file.
+
+|
+
+.. _psycopg: https://www.psycopg.org/