Chinese ancient names for millet are jì or sù.Milled grain, named due to its small size, with a diameter of about 2 millimeters.Originally from the Yellow River basin in northern China, it was one of the main crops during the Xia and Shang dynasties.It is known as the "millet culture"..Millet grows drought-resistant with many varieties."Millet has five colors" is commonly used to refer to various colored millets, including white, red, yellow, black, orange, and purple.There are also sticky types of millet.