Hi @taowang , as far as I know there is now easy way today. So, out of the box Ghost doesn’t support multi-language.
I saw that guys have either two separate instances of Ghost using different languages - which is overkill or simply write content in a different languages, but overall UI will be in one language.
I selected the second option.
I saw thread here about supporting different languages, but I don’t know if it will be only UI of Ghost or it will also have a support for the articles you write. I don’t have any idea when it will be implemented.
Here is a thread about translation: Help translate Ghost (beta)