The so-called "oiled chestnut" refers to chestnuts suitable for frying. Qianxi chestnut is produced in Qianxi County, Tangshan City, Hebei Province. It is a traditional agricultural product in Hebei Province and has a cultivation history of more than 2,000 years. Qianxi chestnut has an exquisite appearance, reddish brown, with a shallow waxy layer, bright and shiny; the kernel is beige, the inner skin is easy to peel, the flesh is delicate, glutinous and sticky, sweet and fragrant, and rich in nutrients. In March 2008, Qianxi Chestnut was recognized as a well-known trademark in China by the Trademark Office of the State Administration for Industry and Commerce.

Chestnut has high nutritional value, sweet and aromatic, containing 51-60 starch, 5.7-10.7 protein, 2-7.4 fat, sugar, starch, crude fiber, carotene, and vitamin A. , B,, B:, C and minerals such as calcium, phosphorus, potassium, etc., up to 98 nutrients can be absorbed and utilized by the human body. Calculated based on ten pieces, the calories are 204 calories and the fat content is less than 1 gram. It has the lowest fat content among shelled fruits. It is widely used in food processing, cooking banquets and non-staple food. Chestnuts are suitable for eating raw or stir-fried. Chestnuts stir-fried with sugar or mixed with roasted chicken have a delicious aroma. They can be ground into powder and can also be made into a variety of dishes, pastries, canned foods, etc. Chestnuts are easy to store and keep fresh, which can extend the market supply time. Chestnuts are mostly grown on hillside areas and are known as "health food" abroad. They are high-quality fruits that strengthen the stomach, nourish the kidneys and prolong life.

Chestnuts are treasures all over their body and can be processed into dried chestnuts, chestnut powder, chestnut jam, pulp, cakes, cans and other foods. Chestnut soup is a nutritious candy suitable for all ages. The chestnut tree is hard, straight-grained, antiseptic and moisture-resistant, and is a good material for manufacturing military industry, vehicles, ships, furniture, etc.; its branches, leaves, bark, and thorns are rich in tannins, which can be used to extract roasted gum; and its flowers are a good source of nectar. All parts of the chestnut can be used as medicine. The chestnut can strengthen the spleen, replenish qi, and eliminate dampness and heat. The shell is called an astringent to treat nausea, the bark can be decoctioned to wash away erysipelas, and the root can cure kidney qi and other diseases.

However, it is not advisable to eat too much chestnuts. Too much raw chestnuts are not easy to digest, and too many cooked chestnuts can cause gas stagnation. People with diabetes should eat less or not eat them at all, because the sugar content of chestnuts is very high.