Some good thoughts. In general I just walk around and try and see something that interests me (easy in China). I guess I am not sure at the time what style they fall into, I would say that most are of the portrait and humanity kind. The juxtaposition can be hard at times unless you have found a place that allows you to shoot time and time again to get the elements to line up.
In any case, I just go and shoot and try not to think too much – unless a scene reminds me of someone else’s photo and then for sure I try to replicate or extend how I thought the other photog did it.