Why do all these places sound the same? Green bean? What an artrocious name, they should be shut down for that alone if you ask me. Liu? I have heard that name somewhere before, though not in connection with Shanghai I don't think. Seems to be a popular name for crooks. I would advise, as many others do, not to work at places that are privately owned. If you get yourself a public school job, and a few private students, you can do very well without having to subject yourself to constant attempts to cheat you.