Longzi Black Barley is a unique barley variety in Longzi County, Shannan District, Tibet. It grows in wheat fields at an altitude of 3,800 m to 4,200 m. It is named because its husk and grain epidermis are black and purple, and its shape is elliptical or rhomboid. It has special high antioxidant and nutrient content which is not found in common white peony.

The black scorpion in Longzi County is made from high-quality black barley, which is 3800 meters to 4200 meters above sea level in Longzi County. The color is grayish black, the powder is even, the thickness is moderate, and it has a unique green scent and a sweet taste. With the continuous improvement of people's living standards, healthy consumption and healthy eating have become fashionable. Longzi Black and Green is favored by many Tibetan consumers and mainland consumers.