What a thrilling question! All things about Regionalism intrigue me, I have no discrimination of Region, I just love to see the differences behind the culture and living habit.
I grew up in Guangdong, went to college in Tianjin, I lived in Tianjin for 6 years. I think I have deep feeling on differences of the tow.
China is a big country in territory, but also in variety of culture, climate, food, languges (dialects). Europe is a continent with many countries, and China is a country that contains many culture and languages (dialects) like Europe. I will list the differences between south and north as much as possible.