zentao/extension/xuan/setting/ext/lang/en/xuanxuan.php

<?php
$lang->setting->common         = 'Chat Settings';
$lang->setting->xuanxuan       = 'Chat Integration';
$lang->setting->downloadXXD    = 'Download XXD';
$lang->setting->langs['zh-cn'] = 'Simplified Chinese';
$lang->setting->langs['zh-tw'] = 'Traditional Chinese';
$lang->setting->langs['en']    = 'English';