Taohuatan is a thousand feet deep, and it is not as good as "silver silk". Under the Taohua Mountain in the northwest of Liaoning Province, next to the Longtan Mountain Spring, there is a long-established and well-known food – Longtan Mungfan fans. Fans use pure natural mung beans as raw materials, complemented by high-quality Longtan spring water, refined by traditional fan production techniques and modern technology. It is as fine as silver wire, evenly yarn, white and bright color, strong resistance to boiling, no soup, no sticky, delicious and refreshing, rich in multivitamins, rich in nutrients, disinfection, anti-inflammatory, summer heat, fire Function, known as the "China's first powder".