I found this at the EmacsWiki page on writing Chinese [1]. It's the work of Ye Wenbin (叶文彬), who has an Emacs wiki page [2]. The package is described in detail, in Chinese, on another EmacsWiki page, EimForChinese [3]. Wenbin references some files from his personal home page [4] under tsinghua.edu.cn. Unfortunately, his personal home page is no longer present. Unfortunately, I'm not sure where I got the tar ball any more. There is, however, a repository [5] on github that seems to have a similar codebase. Feel free to contact me at danking@ccs.neu.edu. [1] http://www.emacswiki.org/emacs-zh/WritingChinese [2] http://www.emacswiki.org/emacs-zh/Ye_Wenbin [3] http://www.emacswiki.org/emacs-zh/EimForChinese [4] http://learn.tsinghua.edu.cn:8080/2005211356/emacs/Eim.html [5] https://github.com/viogus/eim