I wonder if Vanilla is a kinda CMS ,and can does it have language package for Chinese
you can find locale add-ones
It is not a cms in the same way as wordpress is an all bells and whistles cms.
It is two things. A forum software, and and a nifty application framework.
Actually technically the framework is called Garden. It is a kind of MCV framework that if transportable, fairly compact, and pluggable.
The is a CMS built on Garden called vanilla CMS.
Shipped in the core, are some default applications:
Most development however is is through addons like plugins, themes, and locales, which can be applied across applications.
grep is your friend.