1. Corn: Compared with traditional food crops such as rice and wheat, corn has strong drought tolerance, cold tolerance, barren tolerance and excellent environmental adaptability. Corn has high nutritional value and is an excellent food crop. 2. Black rice: Black rice is a kind of rice used for both medicine and food, belonging to glutinous rice. Black rice is a characteristic variety formed by long-term cultivation of Gramineae rice. There are two kinds of grain types: indica rice and japonica rice, and the grain quality is divided into waxy and non-waxy. Brown rice is black or dark brown. Black rice is dark in color and rich in nutrition, and has the reputation of "black pearl" and "king of rice in the world". 3. Buckwheat: Buckwheat is 30-90 cm high, with branches on the upper part, green or red, longitudinal edges, hairless or papillae along one side of the longitudinal edges. The leaves are triangular or ovoid, 2.5-7 cm long and 2-5 cm wide. The top is tapered, the base is heart-shaped, and the two sides are papillae along the veins. 4. Oat: Oat is a worldwide cultivated crop. However, the main concentrated producing areas are temperate regions in the northern hemisphere. The main producers are Russian, Canadian, American, Australian, German, Finland and China. The main producing areas of oats in China are Inner Mongolia, Hebei, Jilin, Shanxi, Shaanxi, Qinghai and Gansu, with small areas planted in Yunnan, Guizhou, Sichuan and Tibet, among which Inner Mongolia has the largest planting area. I like the cold and dry climate. 5. Coix seed: Coix seed has high nutritional value. Coix seed contains minerals such as protein, fat, carbohydrate, crude fiber, calcium, phosphorus and iron, vitamin B 1, vitamin B2, nicotinic acid, starch, leucine, arginine, lysine, tyrosine, fatty acid, coix seed ester, coix seed oil, sitosterol and alkaloid, and eight essential amino acids.