David：As a foreigner, I traveled around China and noticed that the cuisine in the north and south is very different. There is a great variety of food in China.
You：There are so many places where people live in China. People from these different places have different life styles and food. The produce of different places might not even be the same. So people make different types of food depending on different ingredients and different cooking styles.
David：Well, what is the biggest difference between northern and southern food?
You:Maybe our cooking styles. Even though they use the same ingredients, northern and southern people will prepare their local food differently. The cooking style.
David：Can you give me an example?
You：Take fish for example. If northern people cooked the fish, maybe they would add a lot of ingredients and cook the fish in some sauce. But southern people might just add ginger and boil the fish. Their meal may taste lighter than northern food.
David：Sounds like northern and southern cuisine are quite different.