people in the northwest eat land animals, while people in the southeast eat aquatic products

Han nationality is the main ethnic group in China, and its traditional food structure is mainly based on plant raw materials. The staple food is grains, the complementary food is fruits and vegetables, plus a small amount of meat. Some ethnic minorities, who are mainly engaged in animal husbandry, live on meat. Since the Neolithic Age, China has entered a farming society, and people's diet is mainly cereals. However, due to the differences of natural conditions in different places, the types of cereals are different. There are two different staple food types in China, the Yellow River valley and the Yangtze River valley. The former is mainly millet and the latter is mainly rice. Rice is almost the only optional staple crop in paddy fields in the south, while there are millet, millet, wheat, glutinous rice and other crops to choose from in dry land in the north. After the Warring States period, with the popularization and application of grinding, flour food gradually prevailed, and the status of wheat stood out. Wheat in the north has gradually replaced millet and become the staple food in people's daily life. However, rice in the south has gone through thousands of years, and its position as a staple food has never wavered. Not only that, after the Tang and Song Dynasties, rice was continuously transferred to the north. There have been proverbs in the history of China, such as "Su Hu is ripe, the world is sufficient" and "Hu Guang is sufficient, the world is sufficient". Both Su Hu and Huguang are rich in rice. This reflects the importance of rice. During the Ming and Qing dynasties, China's population grew rapidly, and the per capita cultivated land dropped sharply. The introduction of sweet potato, corn, potato and other crops has had a certain impact on the change of food structure in China and has become an important food source in hilly and mountainous areas. In ancient China, a food structure with more grains and less meat was formed very early, which was more obvious among ordinary people. For a long time, the proportion of meat in people's food structure is very small. Among the animal raw materials of food, pork, poultry and eggs account for a large proportion. In the north, cattle and sheep cheese occupies an important position; In the south and coastal areas where there are many lakes, the proportion of aquatic products is high. Until today, although China's food structure has been adjusted, it still maintains the basic characteristics of the traditional food structure. In recent years, with the improvement of economic level, the proportion of meat, poultry, eggs and milk has increased significantly.