use YaHei font in ubuntu system

Just for log.

• in Nautilus, press CTRL+L, locate at fonts:/
• paste the yahei.ttf and yaheibd.ttf
• add the following line to 40-generic.conf and 60-latin.conf under /etc/fonts/conf.avail. (after <family>Bitstream Vera Serif</family>)

<family>Microsoft YaHei</family>

now restart the xserver, Chinese font display perfectly.