1. In modern common Chinese, grains usually refer to rice, wheat, soybeans, corn and potatoes. At the same time, grains other than rice and flour are customarily called miscellaneous grains, and miscellaneous grains also refer to food crops, so grains are also a general term for food crops.

2. The word "five grains" in ancient times generally refers to: millet, beans, hemp, wheat and rice; At the same time, grain can also be a common word, referring to crops or agricultural products. Can be extended to foods and beverages containing cereals or native crops as raw materials.