Dachanglongnan sugar was originally named Dachanglong "drenching sugar" (the word "drenching" in Chaoshan dialect should be pronounced "blue"). It was initiated by Chen Changlong, Junbu Town, Puning City, Guangdong Province. It has a history of more than 70 years and is famous for its excellent sugar and food. When Chen/Kloc-0 was 5 years old, he went to a candy store in Chaoyang and learned a set of techniques for making candy food. Two years later, he went home and opened his own shop to make sugar. Later, after groping, he made a new variety named Nantang.

"Chennantang" is famous for its exquisite materials, unique technology, pure products and unique flavor. Its main ingredients are: selected peanuts, fresh lard, high-quality maltose and white sugar. When it is made, peanuts are fried in lard, then put on a plate, then lard, maltose and white sugar (mixed in a certain proportion) are mixed, and heated in a pot to make them melt into a whole and become gelatinous, which is called glycoside. Then pour the glucoside on the fried peanuts and evenly penetrate around the fried peanuts to form the south sugar. The key to Chen's ability to cook sugar is to stir-fry peanuts and make "glycoside". The first is fried peanuts, which can be fried thoroughly, not too much. The proportion of materials used to make "glycoside" should be just right. When it becomes "glycoside", it will coagulate without "sand resistance" Different seasons can make the sugar produced all year round the same, which is beyond others' reach. Therefore, the sugar produced by Chen has unique advantages: first, the glue is soft but not sticky; Second, peanuts are crispy and refreshing, and people with incomplete teeth can enjoy them; The third is sweet with sweetness, oily but not greasy, refreshing and palatable. Therefore, it has always been called the best refreshment and the best gift for guests. It is deeply loved by people and customers.