This is one I hadn't know about until today: the efficacy of Chinese class identification.
Class groups in China, as you know, stay together forever. Typically, also, in my experience, they unify. This, it turns out, eases the way for such grotesqueries as small group discussion and large class activities. A unified class is entirely okay with babbling away to their immediate seat mates seemingly in the knowledge that everyone else in the room is doing the same thing, and for the most part they stay on task. And they are willing to listen to other groups in later discussion.
But when the class, for whatever reason, has not come together as a unit... silence reigns.
So when your classroom, long term, is about as cohesive as a train station waiting room? First thing I thought of was team building exercises, but intruding on a class identity of having no identity is itself a problem, right?
What do you do when your classroom has no unity?