[ctos]

Update, you don't need additional font file now, you can use system embedded font to display Chinese (or language android native supported). Thanks wallcraft's comments!

You just need apply below scripts in Extra CSS:

@font-face {
font-family: "DroidFont", serif, sans-serif;
font-weight: normal;
font-style: normal;
src: url(res:///system/fonts/DroidSansFallback.ttf);
}
@font-face {
font-family: "DroidFont", serif, sans-serif;
font-weight: bold;
font-style: normal;
src: url(res:///system/fonts/DroidSansFallback.ttf);
}
@font-face {
font-family: "DroidFont", serif, sans-serif;
font-weight: normal;
font-style: italic;
src: url(res:///system/fonts/DroidSansFallback.ttf);
}
@font-face {
font-family: "DroidFont", serif, sans-serif;
font-weight: bold;
font-style: italic;
src: url(res:///system/fonts/DroidSansFallback.ttf);
}
body { font-family: "DroidFont", serif;}

enjoy it!