What do people often say about whole grains?

There are many sayings about "five grains" in ancient times, and there are two main ones: 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 rice producing area was in the south, while the rice planting in the north was limited, so there was no rice in the original "five grains".

Related introduction:

1, "grain" originally refers to grain with shell; Like rice, millet (millet, that is, millet) and millet (also known as yellow rice), there are shells outside, so they are called valleys. The sound of the word Gu comes from the sound of shells. Grains were originally called grains in ancient China, and later referred to food crops.

2. Since rice, wheat and glutinous rice are common in life, they will not be introduced here. The following mainly introduces grains that are not common in life but are indeed common in ancient times:

3, millet: millet shell, that is, yellow rice, its son is sticky after cooking, and can make wine and cakes. Because it is not conducive to digestion, "millet" is basically not used as a staple food now.

4. Xiaomi: also known as Xiaomi, it is drought-tolerant and has many varieties. Commonly known as "colorful millet", including white, red, yellow, black, orange, purple millet and sticky millet. The earliest wine in China was also made from millet. Millet is suitable for growing in arid areas without irrigation. Its stems and leaves are hard and can be used as feed. Generally only cows can digest it. The staple food now is basically not "millet".

5. Cannabis: Cannabis is mainly used in agricultural production. His stem bark can be used as rope (hemp rope), hemp clothes, hemp paper and so on. After retting, it is very durable. Peeled stems can be used as firewood and build houses, which feels a little woody. At present, skins and stems can be made into various high-grade papers such as Xuan paper by refining fibers.