2, millet: ancient times specifically refers to a seed called millet annual herb. Leaves linear, seed yellowish, peeled called yellow rice, cooked viscous. Is one of the important grain crops. Ancient China with a hundred millet arranged, take its length as a foot of the standard, called the millet ruler. Millet can be brewed, make cakes and so on.
3, corn: commonly known as millet. Ancient corn is millet, millet and other grains in general. Corn grain ancient agricultural book called sorghum, glutinous corn for Panicum. Oracle "Wo" means corn. Later, people called a thin beam called corn, the northern people call corn millet. The simple distinction is: large spikes, long hairs and coarse grains are beams, small spikes, short hairs and fine grains are millet. The seedling is similar to thatch. Corn is still cultivated.