... So the prof walks into the classroom and stands there looking at us. Unnerved by his silence, the class quietens too(to give him some credit, that might have been his intention). After a few minutes of this he leans forward and says, "Do you know Chinese?". As if the two dozen gaping faces weren't a sufficient answer, he asks again, "Do you speak Chinese? You know, the language...". Pulling ourselves together, we decided to go on the defensive and pointedly glared at him as if to say, "get on with it!!". We were rewarded for our patience by his next line, "Just as you don't know chinese, I don't know anything about Non-Ferrous Metallography(The subject he's supposed to be teaching). I did my bachelor's in Mech Engg and my Post-Grad in Welding." So we're like, "Ok... we get it. You're going to be like the worst prof ever.", and we continue to stare...