zentao/extension/xuan/setting/ext/lang/zh-cn/xuanxuan.php

<?php
$lang->setting->common         = '聊天设置';
$lang->setting->xuanxuan       = '聊天集成';
$lang->setting->downloadXXD    = '下载聊天服务端';
$lang->setting->langs['zh-cn'] = '简体';
$lang->setting->langs['zh-tw'] = '繁體';
$lang->setting->langs['en']    = 'English';