Created by: wangkuiyi

As our goal is to make the English and Chinese documentations have the same structure, it seems that we should keep a single directory structure, other than two separated directories doc and doc_cn?

How about the idea that we have only one directory structure and keep two versions of each file in there, e.g., doc/demos/ds2/ds2_en.rst and doc/demos/ds2/ds2_cn.rst ?