As far as raw materials of tartary buckwheat are concerned, the best quality tartary buckwheat is produced in Daliangshan area of Sichuan Province. Because it grows in the mountainous area above 2000 meters above sea level, it is more natural and nutritious than tartary buckwheat from Shanxi, Inner Mongolia and Yunnan. At present, there are many brands of tartary buckwheat tea on the market. Personally, I always like to drink Anxi bitter buckwheat tea. In order to help the nutrients in tartary buckwheat be better absorbed by human body, as early as 2002, the founder of Anxi Company developed the national invention patent of tartary buckwheat tea technology and developed the first brand of tartary buckwheat tea in China.