Maojiancao, scientific name Yan Qinglan. It is a plant of Labiatae and Orchidaceae, which is produced in Liaoning, Inner Mongolia, Hebei and Shanxi, and reaches Xining, Qinghai in the west. Born in the sunny place of alpine grassland, grassy slope or sparse forest at an altitude of 650-2400 meters (Qinghai 2650-3 100 meters). The whole plant has fragrance and medicinal value. The local people of Luya Mountain in Shanxi Province have made it into tea since ancient times, which has anti-aging and health care functions. People usually call it "Maojian tea".

Maojian grass (scientific name: Gentiana scabra) is a herb of Orchidaceae in Labiatae. Rhizomes are straight, about 10 mm thick, producing many stems. Stems unbranched, long 15-42 cm. Leaves triangular-ovate, blunt at the top. The leaves in the middle of the stem have obvious petioles, and the leaves at the inflorescence become smaller. Cymes are dense and usually head-shaped.

Economic value of Maojian grass;

Maojian tea was made from young leaves of Maojian grass by farmers in Gujiao, Loufan, Ningwu and Yuanping areas of Shanxi Province, China. The processing method of "Maojian tea" is relatively simple, which can be made by ordinary families, and the effective components are not easy to lose. The produced tea has the characteristics of mellow and rich.

So in the local area, farmers can often be seen selling their own processed Maojian tea, and some brands of Maojian tea developed by manufacturers are sold in Gujiao, Yuanping, Ningwu and other places.