How to distinguish between grains and mixed grains?

Difference: the five grains usually refers to: rice, wheat, soybeans, corn, potatoes, and customarily will be other than rice and flour grain called miscellaneous grains.

Five grains: usually commonly known as "five grains" refers to the five kinds of grains." Five grains", there are a variety of different ancient say, the most important two: one refers to rice, millet, millet, wheat, beans; another refers to hemp, millet, millet, wheat, beans. The difference between the two is: the former has rice without hemp, the latter has hemp without rice. Ancient economic and cultural center in the Yellow River basin, the main source of rice in the south, and the north is limited to grow rice, so the "five grains" in the initial no rice.

Mixed grains: mixed grains usually refers to rice, wheat, corn, soybeans and potatoes outside of the five major crops of grain and bean crops. Mainly: sorghum, grain, buckwheat (buckwheat, buckwheat), oats (Avena sativa), barley, millet, millet, Job's tears, seed amaranth, and kidney beans (kidney beans), mung beans, soybeans (red beans, adzuki beans), fava beans, peas, cowpeas, lentils (Bing beans), black beans and so on. They are characterized by a short growing period, a small planting area, a special planting area, a low yield, and are generally rich in nutrients.