From pijiang's blog:
http://blog.wenxuecity.com/blogview.php?date=200708&postID=40272
http://blog.wenxuecity.com/blogview.php?date=200709&postID=27583
Also see:
http://www.bowu.org/blog/index.php?entry=entry070312-221903
http://www..us/dispbbs.asp?boardID=215&ID=339363&page=1