Grains refer to wheat, corn, rice, soybeans and potatoes, but at the same time, grains other than rice and flour are customarily called miscellaneous grains, and miscellaneous grains are also generally referred to as food crops, so grains are also a general term for food crops.

Second, the historical origin

The saying of whole grains has a very long history. China people have followed a diet dominated by grains for thousands of years, and it was mentioned in the book Huangdi Neijing as early as two thousand years ago. People generally think that wheat and rice are flour and rice, and miscellaneous grains refer to other grains. The miscellaneous grains we are talking about now include a variety of cereals and legumes, such as corn, millet, barley, black beans, broad beans, mung beans, peas, sweet potatoes and so on.