Jiangsu Guanyun bean cultivation.

In Guanyun County, Jiangsu Province, bean sprouts are a well-known delicacy. The market price exceeds 100 yuan per kilogram. Farmed bean sprouts have become a specialty product that increases farmers' income.

Guanyun County has an area of ??about 20,000 acres for bean sprout cultivation. It is the largest bean sprout trading and distribution center in the country. It has formed a complete industrial chain integrating bean sprout cultivation, sales and processing, creating employment for tens of thousands of people.

In order to build the Doudan brand, Guanyun County has held nine consecutive "Doudan Food Culture Festival".

Guanyun County Yimin Doudan Breeding Base (formerly known as Guanyun County Yimin Green Ecological Breeding Operation Department) was established in 2019 and is located in Lianyungang City, Jiangsu Province. It is an enterprise mainly engaged in animal husbandry.