People usually refer to the eggs laid by free-range chickens in the natural environment of farmers as native eggs, or as free range eggs and stupid eggs. There is no obvious difference in nutritional value between native eggs and ordinary eggs.

The standards of the Ministry of Agriculture on eggs are only pollution-free eggs, green eggs and organic eggs standards, but there is no exact standard for native eggs. In fact, in the eyes of ordinary people, soil eggs should be defined as: farmers are free-range, eat whole grains and feed freely during the day, chickens grow naturally without external factors, and no drugs are used in the process of chicken stocking.

Mountain Egg, Grass Egg and free range eggs are other names of native eggs, which belong to the native egg family. Of course, there are subtle differences between them: mountain eggs and free range eggs are almost the same concept, especially eggs produced in mountainous and hilly areas, where coarse grains such as sorghum, sweet potatoes, corn, potatoes, taro and yam are fed to local chickens. Soil eggs and grass eggs are almost the same concept, especially eggs produced in the branch of the plain lake, where coarse grains such as rice, wheat, peanuts, soybeans, mung beans, fruits and vegetables are fed to local chickens.