Guangxi Longlin is the mountainous county producing the most chestnuts. The main producing areas are Shali, Kele, Pingya and Xinzhou. The annual output is 500 tons. Every year, the chestnut mature season, foreign merchants flock to Longlin to buy chestnut. One hundred tons of chestnuts are sold all over the county in one month, which is one of the pillars of economic forests and rich people. Chestnut is a highly nutritious food, such as making Sichuan cakes and dumplings are essential ingredients. Modern science found that the carotene content of chestnut is four times that of peanuts, and the vitamin C content is 18 times that of peanuts. It has a good effect of preventing cancer, lowering cholesterol, preventing blood clots and invading viruses and bacteria.