Shuangcheng is a well-known major grain-producing county in China. Due to its reliance on "growing corn", its total grain output ranks fourth in the country. The main cultivation area of Shuangcheng corn is the alluvial plain of the Lalin River, where the soil is exceptionally fertile. Two of the top ten grain-producing counties in China are located in the Lalin River Basin, and it is renowned nationwide for its high-quality brand. One is Wuchang City and the other is Yushu City.

Lotus Roschiber corn is divided into two varieties: yellow corn and black corn. Both are rich in various nutrients such as carbohydrates, proteins, fats, vitamins (such as vitamin A, vitamin C, vitamin E, vitamin B6, folic acid), and minerals (such as magnesium, manganese, phosphorus, selenium). Its dietary fiber can promote intestinal peristalsis, improve digestive function and prevent constipation. Linoleic acid helps lower cholesterol and prevent cardiovascular diseases. Antioxidant substances such as lutein and carotenoids are very beneficial to eye health and can reduce macular degeneration. Magnesium and selenium help fight and prevent cancer and delay aging. Especially our black corn, the keratin layer of the grains deposits melanin to varying degrees, presenting a lustrous black appearance. Every 100g of black corn contains 1.6g of anthocyanins, which have a strong antioxidant effect.