Rice, wheat, millet and millet refer to rice, wheat, millet, soybean and sorghum respectively.

Rice is one of the important food crops for human beings, and it has a long history of cultivation and consumption. At present, half of the world's population eats rice, mainly in Asia, southern Europe and parts of tropical America and Africa.

Wheat includes wheat, barley, oats, rye and so on. Fruit is mainly used as grain or concentrate feed, wine making, caramel making, etc. Culms can be used for weaving or papermaking.

Millet is called yellow rice after peeling, which is slightly larger than millet and sticky after cooking.

Millet refers to millet or millet, an ancient edible crop in China, which is called non-sticky millet and sorghum.

Zizania latifolia is the general name of beans, and the old saying goes: Zizania latifolia is the strongest. In ancient times, it was called "Zi", and in Chinese, it was called "Bean", and now it is called "Zi". The loser is the general name of many beans. However, soybeans are called glutinous rice, bean seedlings are called huo, and adzuki beans are called glutinous rice. Bean products are also one of the favorite foods in China.

"Five grains" statement:

There are many different opinions about "five grains" in ancient times, and the most important ones are two: one refers to rice, millet, millet, wheat and glutinous rice; The other refers to hemp, millet, millet, wheat and glutinous rice. The difference between the two is that the former has rice without hemp, while the latter has hemp without rice. The ancient economic and cultural center was in the Yellow River valley, and the main producing area of rice was in the south, while the cultivation of rice in the north was limited, so there was no rice in the "five grains" at first.