What is the Cause?
XFCE Panel is crashing because: a running application is uses a font type in its title, since this type font (normally ttf and especiallyttf-droid) is not installed the panel crushes.
To fix this we need to install ttf-droid font. It is available in the main repo.
To install, Open Terminal and run the commands below:
sudo pacman -S ttf-droid
[sudo] pcwuyu 的密码： 正在解决依赖关系... 正在查找软件包冲突... 软件包 (1) ttf-droid-20121017-4 下载大小: 3.53 MiB 全部安装大小： 15.31 MiB 净更新大小： 0.00 MiB :: 进行安装吗？ [Y/n] y :: 正在获取软件包......
After installation you should be able to access files and sites with Chinese and other fonts in their tile. For me, it was SM Player.