I think that the perception of most of us in the western world is of the Chinese home cook crouched over a wok on a brazier fed with twigs and cow chips. With the advances that China has made I suppose that many home cooks have kitchens that resemble those in the West.
Just as their style of cooking has to have changed, has the type of food that they are cooking changed? With the transport and availability of food from other regions, has it caused them to be less regional in their home cooking?