The correct name is Allium cepa, also known as small root garlic, mountain garlic, bitter garlic, small么蒜, small root vegetable, small root vegetable, big brain, wild garlic, wild onion, wild cress. Belongs to the lily family, onion plants. In addition to Xinjiang, Qinghai, all provinces and regions of the country are produced. Born on mountain slopes, hills, valleys or meadows at an altitude of less than 1500 meters, a very few areas (Yunnan and Tibet) are also found on mountain slopes at an altitude of 3000 meters. It is also found in the USSR, Korea, and Japan. Bulbs for medicinal purposes, can also be used as vegetables to eat, in a few areas have been cultivated.