1.~/.fonts.conf
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<!-- ~/.fonts.conf file to configure system font access -->
<fontconfig>

    <!-- Replace Courier with a better-looking font -->
    <match target="pattern" name="family">
        <test name="family" qual="any"><string>Courier</string></test>
        <edit name="family" mode="assign">
            <!-- Other choices - Courier New, Luxi Mono -->
            <string>Bitstream Vera Sans Mono</string>
        </edit>
    </match>

    <!-- Reject bitmap fonts in favour of Truetype, Postscript, etc. -->
    <selectfont>
        <rejectfont>
            <pattern>
                <patelt name="scalable"><bool>false</bool></patelt>
            </pattern>
        </rejectfont>
    </selectfont>

    <dir>/usr/share/fonts/hei</dir>

    <alias>
            <family>serif</family>
              <prefer>
                 <family>Microsoft YaHei</family>
                 <family>Bitstream Vera Serif</family>
                 <family>Times New Roman</family>
                 <family>Times</family>
                 <family>AR PL ShanHeiSun Uni</family>
                 <family>AR PL ZenKai Uni</family>
                 <family>AR PL SungtiL GB</family>
                 <family>Kochi Mincho</family>
                 <family>Baekmuk Batang</family>
              </prefer>
      </alias>
     <alias>
              <family>sans-serif</family>
              <prefer>
                 <family>Microsoft YaHei</family>
                <family>Bitstream Vera Sans</family>
                 <family>Arial</family>
                 <family>Verdana</family>
                 <family>AR PL KaitiM GB</family>
                 <family>Kochi Gothic</family>
                 <family>Baekmuk Dotum</family>
              </prefer>
      </alias>
    <alias>
              <family>monospace</family>
              <prefer>
                <family>Bitstream Vera Sans Mono</family>
                <family>Courier New</family>
                <family>Kochi Mincho</family>
                <family>Baekmuk Batang</family>
              </prefer>
      </alias>

</fontconfig>

2./etc/fonts/local.conf
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<!-- /etc/fonts/local.conf file to configure system font access -->
<fontconfig>

<!-- Target dots per inch. -->
        <match target="pattern">
            <edit name="dpi" mode="assign"><double>96</double></edit>
       </match>

<!--Use the Autohinter -->
    <match target="font">
        <edit name="autohint" mode="assign"><bool>false</bool></edit>
    </match>

<!-- Enable sub-pixel rendering -->
        <match target="font">
        <test qual="all" name="rgba"><const>unknown</const></test>
        <edit name="rgba" mode="assign"><const>rgb</const></edit>
    </match>


<!-- Exclude/Include a range of fonts for Anti Aliasing -->
<!--   
    <match target="font">
        <test qual="any" name="size" compare="more"><double>11</double></test>
        <test qual="any" name="size" compare="less"><double>16</double></test>
        <edit name="antialias" mode="assign"><bool>true</bool></edit>
    </match>
-->

<!-- And/Or disable Anti Aliasing for a range on pixel-based size.
     Disabling this using both methods seems to fix Firefox. -->
<!--
    <match target="font">
        <test compare="less" name="pixelsize" qual="any"><double>20</double></test>
        <edit mode="assign" name="antialias"><bool>false</bool></edit>
    </match>
-->

<!-- Other config options that were added to previous versions of config files in the Gentoo Wiki HOWTO. Need clarification. -->
    <match target="font">
        <edit name="hinting" mode="assign"><bool>true</bool></edit>
        <edit name="hintstyle" mode="assign"><const>hintslight</const></edit>
    </match>

</fontconfig>