1. Ludian County, Zhaotong City, Yunnan Province, China: this area is the origin of buckwheat, buckwheat varieties with a wealth of experience in growing buckwheat, high quality, good taste.
2. Switzerland and the French Alps: this region has a cold climate, short sunshine, fertile soil, suitable for the growth of buckwheat and quality improvement.
3. Japan's Hokkaido and Iwate Prefecture: these regions have a cold climate, fertile soil, there are good conditions for buckwheat cultivation.
In short, the best buckwheat production is those with a cold climate, fertile soil, suitable for growth.