Generally, we can divided the farming products of main food in China into 3 styles:
-Rice in Southern and Eastern China,
-Wheat in Northern China
-Sweet Corn in Middle, Northern, Western China.

Traditionally, because of their farming products, the people living in Southern China will have rice, congee or rice noodle as their main food, and people in Northern China will have wheat made products like Bun, noodle, pancake. The populace who living on seaside and lakeside will have seafood or lake fishes as meals.