support Chinese

doc/source/conf.py

@@ -56,4 +56,11 @@ html_theme = 'sphinx_rtd_theme'
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ['_static']
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+html_static_path = ['_static']
+
+# -- Support Chinese -------------------------------------------------------
+latex_engine = 'xelatex'
+latex_use_xindy = False
+latex_elements = {
+    'preamble': '\\usepackage[UTF8]{ctex}\n',
+}
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