There are many cultural and historical differences. The reasons for this are that the Eastern China has been the wealthiest, whereas eastern China was for itinerant Troops.
> People of eastern china are not concerned for the food; take a lot of liquor, and a very fond of extreme loud music.
> Whereas people living in the northwest are more sophisticated; they like to have good food and prefer light music, etc.
HOPE THIS HELPED!!!! xD