See pjiang's blog.
http://diary.wenxuecity.com/diary.php?id=0&yearID=2007&monthID=8&dayID=21&currdate=200708&pid=30270&page=1
http://diary.wenxuecity.com/diary.php?id=0&yearID=2007&monthID=8&dayID=21&currdate=200708&pid=30270&page=1