diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..4ad1ff1
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,133 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+pip-wheel-metadata/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+.python-version
+
+# pipenv
+Pipfile.lock
+
+# PEP 582
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# macOS
+.DS_Store
diff --git a/README.md b/README.md
index e56f4c2..6801ae6 100644
--- a/README.md
+++ b/README.md
@@ -237,7 +237,7 @@ make version
 ## 相关文档
 
 - [README_EN.md](README_EN.md) — English version
-- [CONTRIBUTING.md](CONTRIBUTING.md) — 如何参与贡献
+- **[CONTRIBUTING.md](CONTRIBUTING.md) — 如何参与贡献**
 - [CHANGELOG.md](CHANGELOG.md) — 更新记录
 - [SECURITY.md](SECURITY.md) — 安全说明
 - [RELEASE.md](RELEASE.md) — 发布流程
diff --git a/README_EN.md b/README_EN.md
index dab2a55..45b24b1 100644
--- a/README_EN.md
+++ b/README_EN.md
@@ -238,7 +238,7 @@ make version
 ## Related docs
 
 - [README.md](README.md) — Chinese version
-- [CONTRIBUTING.md](CONTRIBUTING.md) — contribution guide
+- **[CONTRIBUTING.md](CONTRIBUTING.md) — contribution guide**
 - [CHANGELOG.md](CHANGELOG.md) — release notes
 - [SECURITY.md](SECURITY.md) — security notes
 - [RELEASE.md](RELEASE.md) — release process