Ghost supports translatable themes and provides different strategies for managing multi-language content.
To set a publication language to be used for theme translations, go to Settings → General in Ghost Admin, and enter the language/locale tag to be used, e.g.
es for Spanish,
fr for French,
zh for Chinese,
ja for Japanese.
For further details on how to make your theme translatable, check out the translate handlebars helper guidelines.
In multi-language publications, content is published in more than one language. For different approaches to creating a multi-language site on Ghost, see our FAQ.