diff --git a/langfilter/lang/zh-cn/messages.po b/langfilter/lang/zh-cn/messages.po
new file mode 100644
index 00000000..ce18b535
--- /dev/null
+++ b/langfilter/lang/zh-cn/messages.po
@@ -0,0 +1,70 @@
+# ADDON langfilter
+# Copyright (C)
+# This file is distributed under the same license as the Friendica langfilter addon package.
+# 
+# 
+# Translators:
+# 朱陈锬 <tangenters@outlook.com>, 2018
+msgid ""
+msgstr ""
+"Project-Id-Version: friendica\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2015-09-22 15:18+0200\n"
+"PO-Revision-Date: 2018-02-28 11:28+0000\n"
+"Last-Translator: 朱陈锬 <tangenters@outlook.com>\n"
+"Language-Team: Chinese (China) (http://www.transifex.com/Friendica/friendica/language/zh_CN/)\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Language: zh_CN\n"
+"Plural-Forms: nplurals=1; plural=0;\n"
+
+#: langfilter.php:44
+msgid "Language Filter"
+msgstr ""
+
+#: langfilter.php:45
+msgid ""
+"This addon tries to identify the language of a postings. If it does not "
+"match any language spoken by you (see below) the posting will be collapsed. "
+"Remember detecting the language is not perfect, especially with short "
+"postings."
+msgstr ""
+
+#: langfilter.php:46
+msgid "Use the language filter"
+msgstr ""
+
+#: langfilter.php:47
+msgid "I speak"
+msgstr ""
+
+#: langfilter.php:47
+msgid ""
+"List of abbreviations (iso2 codes) for languages you speak, comma separated."
+" For example \"de,it\"."
+msgstr ""
+
+#: langfilter.php:48
+msgid "Minimum confidence in language detection"
+msgstr ""
+
+#: langfilter.php:48
+msgid ""
+"Minimum confidence in language detection being correct, from 0 to 100. Posts"
+" will not be filtered when the confidence of language detection is below "
+"this percent value."
+msgstr ""
+
+#: langfilter.php:49
+msgid "Save Settings"
+msgstr "保存设置"
+
+#: langfilter.php:73
+msgid "Language Filter Settings saved."
+msgstr ""
+
+#: langfilter.php:123
+#, php-format
+msgid "unspoken language %s - Click to open/close"
+msgstr ""
diff --git a/langfilter/lang/zh-cn/strings.php b/langfilter/lang/zh-cn/strings.php
new file mode 100644
index 00000000..75f6b6b4
--- /dev/null
+++ b/langfilter/lang/zh-cn/strings.php
@@ -0,0 +1,17 @@
+<?php
+
+if(! function_exists("string_plural_select_zh_cn")) {
+function string_plural_select_zh_cn($n){
+	return 0;;
+}}
+;
+$a->strings["Language Filter"] = "";
+$a->strings["This addon tries to identify the language of a postings. If it does not match any language spoken by you (see below) the posting will be collapsed. Remember detecting the language is not perfect, especially with short postings."] = "";
+$a->strings["Use the language filter"] = "";
+$a->strings["I speak"] = "";
+$a->strings["List of abbreviations (iso2 codes) for languages you speak, comma separated. For example \"de,it\"."] = "";
+$a->strings["Minimum confidence in language detection"] = "";
+$a->strings["Minimum confidence in language detection being correct, from 0 to 100. Posts will not be filtered when the confidence of language detection is below this percent value."] = "";
+$a->strings["Save Settings"] = "保存设置";
+$a->strings["Language Filter Settings saved."] = "";
+$a->strings["unspoken language %s - Click to open/close"] = "";
diff --git a/mathjax/lang/zh-cn/messages.po b/mathjax/lang/zh-cn/messages.po
new file mode 100644
index 00000000..4e464fbb
--- /dev/null
+++ b/mathjax/lang/zh-cn/messages.po
@@ -0,0 +1,53 @@
+# ADDON mathjax
+# Copyright (C)
+# This file is distributed under the same license as the Friendica mathjax addon package.
+# 
+# 
+# Translators:
+# 朱陈锬 <tangenters@outlook.com>, 2018
+msgid ""
+msgstr ""
+"Project-Id-Version: friendica\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2013-02-27 05:01-0500\n"
+"PO-Revision-Date: 2018-03-01 09:50+0000\n"
+"Last-Translator: 朱陈锬 <tangenters@outlook.com>\n"
+"Language-Team: Chinese (China) (http://www.transifex.com/Friendica/friendica/language/zh_CN/)\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Language: zh_CN\n"
+"Plural-Forms: nplurals=1; plural=0;\n"
+
+#: mathjax.php:36
+msgid "Settings"
+msgstr "设置"
+
+#: mathjax.php:37
+msgid ""
+"The MathJax addon renders mathematical formulae written using the LaTeX "
+"syntax surrounded by the usual $$ or an eqnarray block in the postings of "
+"your wall,network tab and private mail."
+msgstr ""
+
+#: mathjax.php:38
+msgid "Use the MathJax renderer"
+msgstr "使用 MathJax 渲染"
+
+#: mathjax.php:42
+msgid "Submit"
+msgstr "提交"
+
+#: mathjax.php:66
+msgid "Settings updated."
+msgstr "设置已更新"
+
+#: mathjax.php:75
+msgid "MathJax Base URL"
+msgstr ""
+
+#: mathjax.php:75
+msgid ""
+"The URL for the javascript file that should be included to use MathJax. Can "
+"be either the MathJax CDN or another installation of MathJax."
+msgstr ""
diff --git a/mathjax/lang/zh-cn/strings.php b/mathjax/lang/zh-cn/strings.php
index 24ac6e99..05103a5d 100644
--- a/mathjax/lang/zh-cn/strings.php
+++ b/mathjax/lang/zh-cn/strings.php
@@ -1,9 +1,14 @@
-<?php
-
-$a->strings["Settings"] = "配置";
-$a->strings["The MathJax addon renders mathematical formulae written using the LaTeX syntax surrounded by the usual $$ or an eqnarray block in the postings of your wall,network tab and private mail."] = "MathJax插件表示用LaTeX句法的数学公式，围绕$";
-$a->strings["Use the MathJax renderer"] = "用MathJax表示器";
-$a->strings["Submit"] = "提交";
-$a->strings["Settings updated."] = "设置跟新了";
-$a->strings["MathJax Base URL"] = "MathJax基础URL";
-$a->strings["The URL for the javascript file that should be included to use MathJax. Can be either the MathJax CDN or another installation of MathJax."] = "URL JavaScript文件应该包括为用MathJax。可以MathJax CDN或者别的MathJax安装。";
+<?php
+
+if(! function_exists("string_plural_select_zh_cn")) {
+function string_plural_select_zh_cn($n){
+	return 0;;
+}}
+;
+$a->strings["Settings"] = "设置";
+$a->strings["The MathJax addon renders mathematical formulae written using the LaTeX syntax surrounded by the usual $$ or an eqnarray block in the postings of your wall,network tab and private mail."] = "";
+$a->strings["Use the MathJax renderer"] = "使用 MathJax 渲染";
+$a->strings["Submit"] = "提交";
+$a->strings["Settings updated."] = "设置已更新";
+$a->strings["MathJax Base URL"] = "";
+$a->strings["The URL for the javascript file that should be included to use MathJax. Can be either the MathJax CDN or another installation of MathJax."] = "";
diff --git a/piwik/lang/zh-cn/messages.po b/piwik/lang/zh-cn/messages.po
new file mode 100644
index 00000000..6db5342a
--- /dev/null
+++ b/piwik/lang/zh-cn/messages.po
@@ -0,0 +1,64 @@
+# ADDON piwik
+# Copyright (C)
+# This file is distributed under the same license as the Friendica piwik addon package.
+# 
+# 
+# Translators:
+# 朱陈锬 <tangenters@outlook.com>, 2018
+msgid ""
+msgstr ""
+"Project-Id-Version: friendica\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2015-07-26 12:49+0200\n"
+"PO-Revision-Date: 2018-03-01 09:57+0000\n"
+"Last-Translator: 朱陈锬 <tangenters@outlook.com>\n"
+"Language-Team: Chinese (China) (http://www.transifex.com/Friendica/friendica/language/zh_CN/)\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Language: zh_CN\n"
+"Plural-Forms: nplurals=1; plural=0;\n"
+
+#: piwik.php:79
+msgid ""
+"This website is tracked using the <a href='http://www.piwik.org'>Piwik</a> "
+"analytics tool."
+msgstr "此网站用 <a href='http://www.piwik.org'>Piwik</a> 追踪分析工具。"
+
+#: piwik.php:82
+#, php-format
+msgid ""
+"If you do not want that your visits are logged in this way you <a "
+"href='%s'>can set a cookie to prevent Piwik from tracking further visits of "
+"the site</a> (opt-out)."
+msgstr ""
+
+#: piwik.php:89
+msgid "Save Settings"
+msgstr "保存设置"
+
+#: piwik.php:90
+msgid "Piwik Base URL"
+msgstr ""
+
+#: piwik.php:90
+msgid ""
+"Absolute path to your Piwik installation. (without protocol (http/s), with "
+"trailing slash)"
+msgstr ""
+
+#: piwik.php:91
+msgid "Site ID"
+msgstr ""
+
+#: piwik.php:92
+msgid "Show opt-out cookie link?"
+msgstr ""
+
+#: piwik.php:93
+msgid "Asynchronous tracking"
+msgstr "异步追踪"
+
+#: piwik.php:105
+msgid "Settings updated."
+msgstr "设置已更新。"
diff --git a/piwik/lang/zh-cn/strings.php b/piwik/lang/zh-cn/strings.php
index 21ce8b6f..ad99b364 100644
--- a/piwik/lang/zh-cn/strings.php
+++ b/piwik/lang/zh-cn/strings.php
@@ -1,11 +1,16 @@
-<?php
-
-$a->strings["This website is tracked using the <a href='http://www.piwik.org'>Piwik</a> analytics tool."] = "这个网站用<a href='http://www.piwik.org'>Piwik</a>分析工具追踪 。";
-$a->strings["If you do not want that your visits are logged this way you <a href='%s'>can set a cookie to prevent Piwik from tracking further visits of the site</a> (opt-out)."] = "如果您不想您访问这样记录您<a href='%s'>可以用一个cookie防Piwik追踪未来的访问</a>(选择性退出)。";
-$a->strings["Submit"] = "提交";
-$a->strings["Piwik Base URL"] = "Piwik基础URL";
-$a->strings["Absolute path to your Piwik installation. (without protocol (http/s), with trailing slash)"] = "绝对道路到Piwik安装。（没有协议（http/s）跟斜线后缀）";
-$a->strings["Site ID"] = "网站ID";
-$a->strings["Show opt-out cookie link?"] = " 显示选择性退出cookie按钮？";
-$a->strings["Asynchronous tracking"] = "异步追踪";
-$a->strings["Settings updated."] = "设置跟新了";
+<?php
+
+if(! function_exists("string_plural_select_zh_cn")) {
+function string_plural_select_zh_cn($n){
+	return 0;;
+}}
+;
+$a->strings["This website is tracked using the <a href='http://www.piwik.org'>Piwik</a> analytics tool."] = "此网站用 <a href='http://www.piwik.org'>Piwik</a> 追踪分析工具。";
+$a->strings["If you do not want that your visits are logged in this way you <a href='%s'>can set a cookie to prevent Piwik from tracking further visits of the site</a> (opt-out)."] = "";
+$a->strings["Save Settings"] = "保存设置";
+$a->strings["Piwik Base URL"] = "";
+$a->strings["Absolute path to your Piwik installation. (without protocol (http/s), with trailing slash)"] = "";
+$a->strings["Site ID"] = "";
+$a->strings["Show opt-out cookie link?"] = "";
+$a->strings["Asynchronous tracking"] = "异步追踪";
+$a->strings["Settings updated."] = "设置已更新。";