diff --git a/doc/source/handling_bugs.rst b/doc/source/handling_bugs.rst
index 10a0dc9..6092c88 100644
--- a/doc/source/handling_bugs.rst
+++ b/doc/source/handling_bugs.rst
@@ -3,44 +3,81 @@ Handling translation bugs
 =========================
 
 If you are a translator or a person involved in I18n effort,
-you may be interested in fixing translation bugs :)
+you may be interested in triaging and fixing translation bugs :)
+
+The bug triaging process are following the `general bug triaging
+process <https://wiki.openstack.org/wiki/BugTriage>`_.
+If you want to help bug triaging tasks, join the `OpenStack I18n
+bug team <https://launchpad.net/~openstack-i18n-bugs>`_ first.
 
 Bugs in translated documents or dashboard are mainly classified into
 the following areas:
 
 * translation bugs
-* bugs in original strings
+* bugs in a source project
 * bugs in tool chains
 
 Translation bugs
 ----------------
 
-Visit a corresponding resource in Zanata and correct translations.
+If a bug reports translation errors of a certain language, it could be
+called **translation bug**.
+The translation bug should be fixed in the translation tool.
+
+If you are a speaker of this language, you could help
+
+* tag the bug with a language name
+* confirm the bug or mark it as incomplete
+* prioritize the bug
+
+If you are a translator of this language, you could help
+
+* assign the bug to you or a member of your language team, and then
+  mark it as "In Progress"
+* fix it by visiting a corresponding resource in Zanata and
+  correcting translations.
 
 .. note::
 
-   As a translator, if reported bugs turns out beyond a translation bug, it is
-   better to ask I18n team members via the mailing list or the IRC channel.
-   They can handle such bugs.
+   As a translator, if reported bugs turns out beyond a translation bug,
+   it is better to ask I18n team members via the mailing list or the IRC
+   channel. They can handle such bugs.
 
-Bugs in original strings
+Bugs in a source project
 ------------------------
 
-If a reported bug turns out that an original string or message is not correct,
-we suggest to file a bug to a corresponding OpenStack project.
-In most cases, a related project would be one of:
+The translatable strings are extracted from a source project.
+So some i18n bugs might be caused by bugs in the original strings/source
+codes of a source project which contains these translatable strings.
+Those kind of bugs shoud be fixed in the source project.
+
+In most cases, a source project would be one of:
 
 * `OpenStack manuals <https://bugs.launchpad.net/openstack-manuals>`_
 * `Horizon (OpenStack dashboard) <https://bugs.launchpad.net/horizon>`_
 
-.. note::
+You must determine whether bugs are **translation bugs** or **bugs in a
+source project**. Typical i18n bugs in the source project include:
 
-   During translation you may sometimes encounter strings which are hard to
-   translate in your language. For example, we cannot control the order of
-   words, or a plural form is not supported.  Usually, this kind of bugs cannot
-   be fixed just by changing the strings and more work is needed.  We would
-   also suggest to file a bug to a corresponding project above.  In this case,
-   ensure to add **i18n** tag when filing a bug.
+* Original string or message is not correct.
+* Missed translations. Missed translations might be caused by not extracting
+  English strings from the source project, or be caused by real missed
+  translations. If the translations are missed in two different languages,
+  they are probably bugs in the source project. Or else, they are real missed
+  translations.
+* Bugs to report English strings are hard to translate in your language.
+  For example, translators cannot control the order of words, or a plural
+  form is not supported. Usually, this kind of bugs are in the original
+  strings and cannot be fixed just by changing the strings and more work
+  is needed.
+
+If a reported bug turns out to be bugs in a source project,
+You could help
+
+* tag it with the project name, for example "horizon" or "docs".
+* add the source project to "Also affects project" of this bug.
+* confirm the bug
+* prioritize the bug
 
 Bugs in tool chains
 -------------------
@@ -48,4 +85,4 @@ Bugs in tool chains
 If you encounter more complicated things including translation tool chains or
 something others, the most recommended way is to ask it in the I18n mailing
 list ``openstack-i18n@lists.openstack.org``.
-Of course you can file a bug against a related project directly.
+Of course, you can file a bug against a related project directly.