2. Explanation: In ancient times, it refers to six crops: rice, millet, millet, sorghum, wheat and glutinous rice, but in Saint Amethyst, rice, sorghum, glutinous rice, wheat, millet and millet are combined into six grains. Its cloud rice beam millet millet millet.

3. Rice usually refers to rice, which is an important grain widely planted in tropical Asia. South China is the main rice producing area, and it is also cultivated in northern provinces.

4. Liang refers to millet, commonly known as "millet" in the north, and called "millet" after peeling. It is one of the main foods for people in northern China. The cereal has high nutritional value and is rich in protein, fat and vitamins.

Osmunda japonica is the general name of beans.

6. Wheat refers to annual or biennial herbs, which is an important food crop in northern China, including wheat, barley, rye and oats.

7. Millet refers to millet, with linear leaves and light yellow seeds. It is called yellow rice after peeling, slightly larger than millet, and sticky after cooking.